cpython-lru_cache-weakref: Lib/test/test

annotate Lib/test/test_math.py @ 57303:4aa4c19dfaed legacy-trunk

#1757126: fix typo with the cyrillic_asian alias

author	Philip Jenvey <pjenvey@underboss.org>
date	Tue, 17 Nov 2009 02:42:26 +0000
parents	624f81b5ec24
children	cb22eaee86c9

rev	line source
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	1 # Python test set -- math module
75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	2 # XXXX Should not do tests around zero only
75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	3
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	4 from test.test_support import run_unittest, verbose
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	5 import unittest
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	6 import math
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	7 import os
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	8 import sys
47529 6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	9 import random
56268 b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	10 import struct
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	11
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	12 eps = 1E-05
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	13 NAN = float('nan')
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	14 INF = float('inf')
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	15 NINF = float('-inf')
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	16
56089 f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	17 # decorator for skipping tests on non-IEEE 754 platforms
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	18 requires_IEEE_754 = unittest.skipUnless(
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	19 float.__getformat__("double").startswith("IEEE"),
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	20 "test requires IEEE 754 doubles")
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	21
53350 133c66027f33 Issue #5593: Use more robust test for double-rounding in test_fsum. Mark Dickinson <dickinsm@gmail.com> parents: 48110 diff changeset	22 # detect evidence of double-rounding: fsum is not always correctly
133c66027f33 Issue #5593: Use more robust test for double-rounding in test_fsum. Mark Dickinson <dickinsm@gmail.com> parents: 48110 diff changeset	23 # rounded on machines that suffer from double rounding.
133c66027f33 Issue #5593: Use more robust test for double-rounding in test_fsum. Mark Dickinson <dickinsm@gmail.com> parents: 48110 diff changeset	24 x, y = 1e16, 2.9999 # use temporary values to defeat peephole optimizer
133c66027f33 Issue #5593: Use more robust test for double-rounding in test_fsum. Mark Dickinson <dickinsm@gmail.com> parents: 48110 diff changeset	25 HAVE_DOUBLE_ROUNDING = (x + y == 1e16 + 4)
133c66027f33 Issue #5593: Use more robust test for double-rounding in test_fsum. Mark Dickinson <dickinsm@gmail.com> parents: 48110 diff changeset	26
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	27 # locate file with test values
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	28 if __name__ == '__main__':
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	29 file = sys.argv[0]
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	30 else:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	31 file = __file__
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	32 test_dir = os.path.dirname(file) or os.curdir
56268 b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	33 math_testcases = os.path.join(test_dir, 'math_testcases.txt')
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	34 test_file = os.path.join(test_dir, 'cmath_testcases.txt')
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	35
56268 b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	36 def to_ulps(x):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	37 """Convert a non-NaN float x to an integer, in such a way that
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	38 adjacent floats are converted to adjacent integers. Then
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	39 abs(ulps(x) - ulps(y)) gives the difference in ulps between two
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	40 floats.
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	41
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	42 The results from this function will only make sense on platforms
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	43 where C doubles are represented in IEEE 754 binary64 format.
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	44
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	45 """
56556 624f81b5ec24 test_math ulp computation was wrong on big-endian systems Mark Dickinson <dickinsm@gmail.com> parents: 56307 diff changeset	46 n = struct.unpack('<q', struct.pack('<d', x))[0]
56268 b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	47 if n < 0:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	48 n = ~(n+2**63)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	49 return n
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	50
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	51
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	52 def parse_mtestfile(fname):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	53 """Parse a file with test values
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	54
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	55 -- starts a comment
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	56 blank lines, or lines containing only a comment, are ignored
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	57 other lines are expected to have the form
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	58 id fn arg -> expected [flag]*
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	59
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	60 """
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	61 with open(fname) as fp:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	62 for line in fp:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	63 # strip comments, and skip blank lines
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	64 if '--' in line:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	65 line = line[:line.index('--')]
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	66 if not line.strip():
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	67 continue
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	68
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	69 lhs, rhs = line.split('->')
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	70 id, fn, arg = lhs.split()
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	71 rhs_pieces = rhs.split()
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	72 exp = rhs_pieces[0]
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	73 flags = rhs_pieces[1:]
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	74
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	75 yield (id, fn, float(arg), float(exp), flags)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	76
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	77 def parse_testfile(fname):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	78 """Parse a file with test values
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	79
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	80 Empty lines or lines starting with -- are ignored
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	81 yields id, fn, arg_real, arg_imag, exp_real, exp_imag
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	82 """
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	83 with open(fname) as fp:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	84 for line in fp:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	85 # skip comment lines and blank lines
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	86 if line.startswith('--') or not line.strip():
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	87 continue
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	88
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	89 lhs, rhs = line.split('->')
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	90 id, fn, arg_real, arg_imag = lhs.split()
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	91 rhs_pieces = rhs.split()
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	92 exp_real, exp_imag = rhs_pieces[0], rhs_pieces[1]
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	93 flags = rhs_pieces[2:]
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	94
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	95 yield (id, fn,
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	96 float(arg_real), float(arg_imag),
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	97 float(exp_real), float(exp_imag),
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	98 flags
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	99 )
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	100
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	101 class MathTests(unittest.TestCase):
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	102
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	103 def ftest(self, name, value, expected):
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	104 if abs(value-expected) > eps:
42380 0546c115a9cf Make test_math error messages more meaningful for small discrepancies in results Nick Coghlan <ncoghlan@gmail.com> parents: 42370 diff changeset	105 # Use %r instead of %f so the error message
0546c115a9cf Make test_math error messages more meaningful for small discrepancies in results Nick Coghlan <ncoghlan@gmail.com> parents: 42370 diff changeset	106 # displays full precision. Otherwise discrepancies
0546c115a9cf Make test_math error messages more meaningful for small discrepancies in results Nick Coghlan <ncoghlan@gmail.com> parents: 42370 diff changeset	107 # in the last few bits will lead to very confusing
0546c115a9cf Make test_math error messages more meaningful for small discrepancies in results Nick Coghlan <ncoghlan@gmail.com> parents: 42370 diff changeset	108 # error messages
0546c115a9cf Make test_math error messages more meaningful for small discrepancies in results Nick Coghlan <ncoghlan@gmail.com> parents: 42370 diff changeset	109 self.fail('%s returned %r, expected %r' %
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	110 (name, value, expected))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	111
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	112 def testConstants(self):
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	113 self.ftest('pi', math.pi, 3.1415926)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	114 self.ftest('e', math.e, 2.7182818)
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	115
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	116 def testAcos(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	117 self.assertRaises(TypeError, math.acos)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	118 self.ftest('acos(-1)', math.acos(-1), math.pi)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	119 self.ftest('acos(0)', math.acos(0), math.pi/2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	120 self.ftest('acos(1)', math.acos(1), 0)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	121 self.assertRaises(ValueError, math.acos, INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	122 self.assertRaises(ValueError, math.acos, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	123 self.assertTrue(math.isnan(math.acos(NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	124
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	125 def testAcosh(self):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	126 self.assertRaises(TypeError, math.acosh)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	127 self.ftest('acosh(1)', math.acosh(1), 0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	128 self.ftest('acosh(2)', math.acosh(2), 1.3169578969248168)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	129 self.assertRaises(ValueError, math.acosh, 0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	130 self.assertRaises(ValueError, math.acosh, -1)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	131 self.assertEquals(math.acosh(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	132 self.assertRaises(ValueError, math.acosh, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	133 self.assertTrue(math.isnan(math.acosh(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	134
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	135 def testAsin(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	136 self.assertRaises(TypeError, math.asin)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	137 self.ftest('asin(-1)', math.asin(-1), -math.pi/2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	138 self.ftest('asin(0)', math.asin(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	139 self.ftest('asin(1)', math.asin(1), math.pi/2)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	140 self.assertRaises(ValueError, math.asin, INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	141 self.assertRaises(ValueError, math.asin, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	142 self.assertTrue(math.isnan(math.asin(NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	143
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	144 def testAsinh(self):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	145 self.assertRaises(TypeError, math.asinh)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	146 self.ftest('asinh(0)', math.asinh(0), 0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	147 self.ftest('asinh(1)', math.asinh(1), 0.88137358701954305)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	148 self.ftest('asinh(-1)', math.asinh(-1), -0.88137358701954305)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	149 self.assertEquals(math.asinh(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	150 self.assertEquals(math.asinh(NINF), NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	151 self.assertTrue(math.isnan(math.asinh(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	152
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	153 def testAtan(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	154 self.assertRaises(TypeError, math.atan)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	155 self.ftest('atan(-1)', math.atan(-1), -math.pi/4)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	156 self.ftest('atan(0)', math.atan(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	157 self.ftest('atan(1)', math.atan(1), math.pi/4)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	158 self.ftest('atan(inf)', math.atan(INF), math.pi/2)
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	159 self.ftest('atan(-inf)', math.atan(NINF), -math.pi/2)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	160 self.assertTrue(math.isnan(math.atan(NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	161
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	162 def testAtanh(self):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	163 self.assertRaises(TypeError, math.atan)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	164 self.ftest('atanh(0)', math.atanh(0), 0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	165 self.ftest('atanh(0.5)', math.atanh(0.5), 0.54930614433405489)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	166 self.ftest('atanh(-0.5)', math.atanh(-0.5), -0.54930614433405489)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	167 self.assertRaises(ValueError, math.atanh, 1)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	168 self.assertRaises(ValueError, math.atanh, -1)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	169 self.assertRaises(ValueError, math.atanh, INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	170 self.assertRaises(ValueError, math.atanh, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	171 self.assertTrue(math.isnan(math.atanh(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	172
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	173 def testAtan2(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	174 self.assertRaises(TypeError, math.atan2)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	175 self.ftest('atan2(-1, 0)', math.atan2(-1, 0), -math.pi/2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	176 self.ftest('atan2(-1, 1)', math.atan2(-1, 1), -math.pi/4)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	177 self.ftest('atan2(0, 1)', math.atan2(0, 1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	178 self.ftest('atan2(1, 1)', math.atan2(1, 1), math.pi/4)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	179 self.ftest('atan2(1, 0)', math.atan2(1, 0), math.pi/2)
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	180
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	181 # math.atan2(0, x)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	182 self.ftest('atan2(0., -inf)', math.atan2(0., NINF), math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	183 self.ftest('atan2(0., -2.3)', math.atan2(0., -2.3), math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	184 self.ftest('atan2(0., -0.)', math.atan2(0., -0.), math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	185 self.assertEqual(math.atan2(0., 0.), 0.)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	186 self.assertEqual(math.atan2(0., 2.3), 0.)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	187 self.assertEqual(math.atan2(0., INF), 0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	188 self.assertTrue(math.isnan(math.atan2(0., NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	189 # math.atan2(-0, x)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	190 self.ftest('atan2(-0., -inf)', math.atan2(-0., NINF), -math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	191 self.ftest('atan2(-0., -2.3)', math.atan2(-0., -2.3), -math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	192 self.ftest('atan2(-0., -0.)', math.atan2(-0., -0.), -math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	193 self.assertEqual(math.atan2(-0., 0.), -0.)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	194 self.assertEqual(math.atan2(-0., 2.3), -0.)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	195 self.assertEqual(math.atan2(-0., INF), -0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	196 self.assertTrue(math.isnan(math.atan2(-0., NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	197 # math.atan2(INF, x)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	198 self.ftest('atan2(inf, -inf)', math.atan2(INF, NINF), math.pi*3/4)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	199 self.ftest('atan2(inf, -2.3)', math.atan2(INF, -2.3), math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	200 self.ftest('atan2(inf, -0.)', math.atan2(INF, -0.0), math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	201 self.ftest('atan2(inf, 0.)', math.atan2(INF, 0.0), math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	202 self.ftest('atan2(inf, 2.3)', math.atan2(INF, 2.3), math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	203 self.ftest('atan2(inf, inf)', math.atan2(INF, INF), math.pi/4)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	204 self.assertTrue(math.isnan(math.atan2(INF, NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	205 # math.atan2(NINF, x)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	206 self.ftest('atan2(-inf, -inf)', math.atan2(NINF, NINF), -math.pi*3/4)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	207 self.ftest('atan2(-inf, -2.3)', math.atan2(NINF, -2.3), -math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	208 self.ftest('atan2(-inf, -0.)', math.atan2(NINF, -0.0), -math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	209 self.ftest('atan2(-inf, 0.)', math.atan2(NINF, 0.0), -math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	210 self.ftest('atan2(-inf, 2.3)', math.atan2(NINF, 2.3), -math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	211 self.ftest('atan2(-inf, inf)', math.atan2(NINF, INF), -math.pi/4)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	212 self.assertTrue(math.isnan(math.atan2(NINF, NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	213 # math.atan2(+finite, x)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	214 self.ftest('atan2(2.3, -inf)', math.atan2(2.3, NINF), math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	215 self.ftest('atan2(2.3, -0.)', math.atan2(2.3, -0.), math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	216 self.ftest('atan2(2.3, 0.)', math.atan2(2.3, 0.), math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	217 self.assertEqual(math.atan2(2.3, INF), 0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	218 self.assertTrue(math.isnan(math.atan2(2.3, NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	219 # math.atan2(-finite, x)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	220 self.ftest('atan2(-2.3, -inf)', math.atan2(-2.3, NINF), -math.pi)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	221 self.ftest('atan2(-2.3, -0.)', math.atan2(-2.3, -0.), -math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	222 self.ftest('atan2(-2.3, 0.)', math.atan2(-2.3, 0.), -math.pi/2)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	223 self.assertEqual(math.atan2(-2.3, INF), -0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	224 self.assertTrue(math.isnan(math.atan2(-2.3, NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	225 # math.atan2(NAN, x)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	226 self.assertTrue(math.isnan(math.atan2(NAN, NINF)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	227 self.assertTrue(math.isnan(math.atan2(NAN, -2.3)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	228 self.assertTrue(math.isnan(math.atan2(NAN, -0.)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	229 self.assertTrue(math.isnan(math.atan2(NAN, 0.)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	230 self.assertTrue(math.isnan(math.atan2(NAN, 2.3)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	231 self.assertTrue(math.isnan(math.atan2(NAN, INF)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	232 self.assertTrue(math.isnan(math.atan2(NAN, NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	233
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	234 def testCeil(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	235 self.assertRaises(TypeError, math.ceil)
44465 77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	236 # These types will be int in py3k.
77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	237 self.assertEquals(float, type(math.ceil(1)))
77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	238 self.assertEquals(float, type(math.ceil(1L)))
77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	239 self.assertEquals(float, type(math.ceil(1.0)))
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	240 self.ftest('ceil(0.5)', math.ceil(0.5), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	241 self.ftest('ceil(1.0)', math.ceil(1.0), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	242 self.ftest('ceil(1.5)', math.ceil(1.5), 2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	243 self.ftest('ceil(-0.5)', math.ceil(-0.5), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	244 self.ftest('ceil(-1.0)', math.ceil(-1.0), -1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	245 self.ftest('ceil(-1.5)', math.ceil(-1.5), -1)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	246 self.assertEquals(math.ceil(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	247 self.assertEquals(math.ceil(NINF), NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	248 self.assertTrue(math.isnan(math.ceil(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	249
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	250 class TestCeil(object):
44488 94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44465 diff changeset	251 def __float__(self):
94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44465 diff changeset	252 return 41.3
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	253 class TestNoCeil(object):
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	254 pass
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	255 self.ftest('ceil(TestCeil())', math.ceil(TestCeil()), 42)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	256 self.assertRaises(TypeError, math.ceil, TestNoCeil())
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	257
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	258 t = TestNoCeil()
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	259 t.__ceil__ = lambda *args: args
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	260 self.assertRaises(TypeError, math.ceil, t)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	261 self.assertRaises(TypeError, math.ceil, t, 0)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	262
56089 f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	263 @requires_IEEE_754
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	264 def testCopysign(self):
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	265 self.assertRaises(TypeError, math.copysign)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	266 # copysign should let us distinguish signs of zeros
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	267 self.assertEquals(copysign(1., 0.), 1.)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	268 self.assertEquals(copysign(1., -0.), -1.)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	269 self.assertEquals(copysign(INF, 0.), INF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	270 self.assertEquals(copysign(INF, -0.), NINF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	271 self.assertEquals(copysign(NINF, 0.), INF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	272 self.assertEquals(copysign(NINF, -0.), NINF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	273 # and of infinities
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	274 self.assertEquals(copysign(1., INF), 1.)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	275 self.assertEquals(copysign(1., NINF), -1.)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	276 self.assertEquals(copysign(INF, INF), INF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	277 self.assertEquals(copysign(INF, NINF), NINF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	278 self.assertEquals(copysign(NINF, INF), INF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	279 self.assertEquals(copysign(NINF, NINF), NINF)
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	280 self.assertTrue(math.isnan(copysign(NAN, 1.)))
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	281 self.assertTrue(math.isnan(copysign(NAN, INF)))
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	282 self.assertTrue(math.isnan(copysign(NAN, NINF)))
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	283 self.assertTrue(math.isnan(copysign(NAN, NAN)))
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	284 # copysign(INF, NAN) may be INF or it may be NINF, since
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	285 # we don't know whether the sign bit of NAN is set on any
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	286 # given platform.
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	287 self.assertTrue(math.isinf(copysign(INF, NAN)))
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	288 # similarly, copysign(2., NAN) could be 2. or -2.
f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	289 self.assertEquals(abs(copysign(2., NAN)), 2.)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	290
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	291 def testCos(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	292 self.assertRaises(TypeError, math.cos)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	293 self.ftest('cos(-pi/2)', math.cos(-math.pi/2), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	294 self.ftest('cos(0)', math.cos(0), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	295 self.ftest('cos(pi/2)', math.cos(math.pi/2), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	296 self.ftest('cos(pi)', math.cos(math.pi), -1)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	297 try:
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	298 self.assertTrue(math.isnan(math.cos(INF)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	299 self.assertTrue(math.isnan(math.cos(NINF)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	300 except ValueError:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	301 self.assertRaises(ValueError, math.cos, INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	302 self.assertRaises(ValueError, math.cos, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	303 self.assertTrue(math.isnan(math.cos(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	304
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	305 def testCosh(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	306 self.assertRaises(TypeError, math.cosh)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	307 self.ftest('cosh(0)', math.cosh(0), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	308 self.ftest('cosh(2)-2cosh(1)2', math.cosh(2)-2math.cosh(1)**2, -1) # Thanks to Lambert
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	309 self.assertEquals(math.cosh(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	310 self.assertEquals(math.cosh(NINF), INF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	311 self.assertTrue(math.isnan(math.cosh(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	312
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	313 def testDegrees(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	314 self.assertRaises(TypeError, math.degrees)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	315 self.ftest('degrees(pi)', math.degrees(math.pi), 180.0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	316 self.ftest('degrees(pi/2)', math.degrees(math.pi/2), 90.0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	317 self.ftest('degrees(-pi/4)', math.degrees(-math.pi/4), -45.0)
23426 1157281f00a0 Adds tests for degrees() and radians() functions added to mathmodule. Raymond Hettinger <python@rcn.com> parents: 19750 diff changeset	318
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	319 def testExp(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	320 self.assertRaises(TypeError, math.exp)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	321 self.ftest('exp(-1)', math.exp(-1), 1/math.e)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	322 self.ftest('exp(0)', math.exp(0), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	323 self.ftest('exp(1)', math.exp(1), math.e)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	324 self.assertEquals(math.exp(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	325 self.assertEquals(math.exp(NINF), 0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	326 self.assertTrue(math.isnan(math.exp(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	327
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	328 def testFabs(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	329 self.assertRaises(TypeError, math.fabs)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	330 self.ftest('fabs(-1)', math.fabs(-1), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	331 self.ftest('fabs(0)', math.fabs(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	332 self.ftest('fabs(1)', math.fabs(1), 1)
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	333
47529 6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	334 def testFactorial(self):
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	335 def fact(n):
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	336 result = 1
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	337 for i in range(1, int(n)+1):
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	338 result *= i
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	339 return result
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	340 values = range(10) + [50, 100, 500]
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	341 random.shuffle(values)
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	342 for x in range(10):
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	343 for cast in (int, long, float):
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	344 self.assertEqual(math.factorial(cast(x)), fact(x), (x, fact(x), math.factorial(x)))
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	345 self.assertRaises(ValueError, math.factorial, -1)
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	346 self.assertRaises(ValueError, math.factorial, math.pi)
6428c4f1ae09 Issue #2138: Add math.factorial(). Raymond Hettinger <python@rcn.com> parents: 47382 diff changeset	347
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	348 def testFloor(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	349 self.assertRaises(TypeError, math.floor)
44465 77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	350 # These types will be int in py3k.
77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	351 self.assertEquals(float, type(math.floor(1)))
77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	352 self.assertEquals(float, type(math.floor(1L)))
77c37e32fe35 Make math.{floor,ceil}({int,long}) return float again for backwards Jeffrey Yasskin <jyasskin@gmail.com> parents: 44440 diff changeset	353 self.assertEquals(float, type(math.floor(1.0)))
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	354 self.ftest('floor(0.5)', math.floor(0.5), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	355 self.ftest('floor(1.0)', math.floor(1.0), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	356 self.ftest('floor(1.5)', math.floor(1.5), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	357 self.ftest('floor(-0.5)', math.floor(-0.5), -1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	358 self.ftest('floor(-1.0)', math.floor(-1.0), -1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	359 self.ftest('floor(-1.5)', math.floor(-1.5), -2)
42370 64903ff76ede Add explicit test for a misbehaving math.floor Nick Coghlan <ncoghlan@gmail.com> parents: 40284 diff changeset	360 # pow() relies on floor() to check for integers
64903ff76ede Add explicit test for a misbehaving math.floor Nick Coghlan <ncoghlan@gmail.com> parents: 40284 diff changeset	361 # This fails on some platforms - so check it here
64903ff76ede Add explicit test for a misbehaving math.floor Nick Coghlan <ncoghlan@gmail.com> parents: 40284 diff changeset	362 self.ftest('floor(1.23e167)', math.floor(1.23e167), 1.23e167)
64903ff76ede Add explicit test for a misbehaving math.floor Nick Coghlan <ncoghlan@gmail.com> parents: 40284 diff changeset	363 self.ftest('floor(-1.23e167)', math.floor(-1.23e167), -1.23e167)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	364 self.assertEquals(math.ceil(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	365 self.assertEquals(math.ceil(NINF), NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	366 self.assertTrue(math.isnan(math.floor(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	367
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	368 class TestFloor(object):
44488 94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44465 diff changeset	369 def __float__(self):
94eeaeeb3ce9 Continue rolling back pep-3141 changes that changed behavior from 2.5. This Jeffrey Yasskin <jyasskin@gmail.com> parents: 44465 diff changeset	370 return 42.3
44432 4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	371 class TestNoFloor(object):
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	372 pass
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	373 self.ftest('floor(TestFloor())', math.floor(TestFloor()), 42)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	374 self.assertRaises(TypeError, math.floor, TestNoFloor())
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	375
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	376 t = TestNoFloor()
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	377 t.__floor__ = lambda *args: args
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	378 self.assertRaises(TypeError, math.floor, t)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	379 self.assertRaises(TypeError, math.floor, t, 0)
4f9723d9ca32 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just Jeffrey Yasskin <jyasskin@gmail.com> parents: 42380 diff changeset	380
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	381 def testFmod(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	382 self.assertRaises(TypeError, math.fmod)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	383 self.ftest('fmod(10,1)', math.fmod(10,1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	384 self.ftest('fmod(10,0.5)', math.fmod(10,0.5), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	385 self.ftest('fmod(10,1.5)', math.fmod(10,1.5), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	386 self.ftest('fmod(-10,1)', math.fmod(-10,1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	387 self.ftest('fmod(-10,0.5)', math.fmod(-10,0.5), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	388 self.ftest('fmod(-10,1.5)', math.fmod(-10,1.5), -1)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	389 self.assertTrue(math.isnan(math.fmod(NAN, 1.)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	390 self.assertTrue(math.isnan(math.fmod(1., NAN)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	391 self.assertTrue(math.isnan(math.fmod(NAN, NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	392 self.assertRaises(ValueError, math.fmod, 1., 0.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	393 self.assertRaises(ValueError, math.fmod, INF, 1.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	394 self.assertRaises(ValueError, math.fmod, NINF, 1.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	395 self.assertRaises(ValueError, math.fmod, INF, 0.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	396 self.assertEquals(math.fmod(3.0, INF), 3.0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	397 self.assertEquals(math.fmod(-3.0, INF), -3.0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	398 self.assertEquals(math.fmod(3.0, NINF), 3.0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	399 self.assertEquals(math.fmod(-3.0, NINF), -3.0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	400 self.assertEquals(math.fmod(0.0, 3.0), 0.0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	401 self.assertEquals(math.fmod(0.0, NINF), 0.0)
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	402
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	403 def testFrexp(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	404 self.assertRaises(TypeError, math.frexp)
1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	405
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	406 def testfrexp(name, (mant, exp), (emant, eexp)):
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	407 if abs(mant-emant) > eps or exp != eexp:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	408 self.fail('%s returned %r, expected %r'%\
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	409 (name, (mant, exp), (emant,eexp)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	410
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	411 testfrexp('frexp(-1)', math.frexp(-1), (-0.5, 1))
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	412 testfrexp('frexp(0)', math.frexp(0), (0, 0))
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	413 testfrexp('frexp(1)', math.frexp(1), (0.5, 1))
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	414 testfrexp('frexp(2)', math.frexp(2), (0.5, 2))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	415
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	416 self.assertEquals(math.frexp(INF)[0], INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	417 self.assertEquals(math.frexp(NINF)[0], NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	418 self.assertTrue(math.isnan(math.frexp(NAN)[0]))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	419
56089 f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	420 @requires_IEEE_754
53351 32226776f866 Remove unnecessary double negative Mark Dickinson <dickinsm@gmail.com> parents: 53350 diff changeset	421 @unittest.skipIf(HAVE_DOUBLE_ROUNDING,
53350 133c66027f33 Issue #5593: Use more robust test for double-rounding in test_fsum. Mark Dickinson <dickinsm@gmail.com> parents: 48110 diff changeset	422 "fsum is not exact on machines with double rounding")
48110 347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	423 def testFsum(self):
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	424 # math.fsum relies on exact rounding for correct operation.
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	425 # There's a known problem with IA32 floating-point that causes
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	426 # inexact rounding in some situations, and will cause the
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	427 # math.fsum tests below to fail; see issue #2937. On non IEEE
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	428 # 754 platforms, and on IEEE 754 platforms that exhibit the
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	429 # problem described in issue #2937, we simply skip the whole
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	430 # test.
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	431
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	432 # Python version of math.fsum, for comparison. Uses a
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	433 # different algorithm based on frexp, ldexp and integer
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	434 # arithmetic.
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	435 from sys import float_info
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	436 mant_dig = float_info.mant_dig
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	437 etiny = float_info.min_exp - mant_dig
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	438
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	439 def msum(iterable):
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	440 """Full precision summation. Compute sum(iterable) without any
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	441 intermediate accumulation of error. Based on the 'lsum' function
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	442 at http://code.activestate.com/recipes/393090/
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	443
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	444 """
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	445 tmant, texp = 0, 0
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	446 for x in iterable:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	447 mant, exp = math.frexp(x)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	448 mant, exp = int(math.ldexp(mant, mant_dig)), exp - mant_dig
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	449 if texp > exp:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	450 tmant <<= texp-exp
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	451 texp = exp
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	452 else:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	453 mant <<= exp-texp
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	454 tmant += mant
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	455 # Round tmant * 2**texp to a float. The original recipe
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	456 # used float(str(tmant)) * 2.0**texp for this, but that's
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	457 # a little unsafe because str -> float conversion can't be
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	458 # relied upon to do correct rounding on all platforms.
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	459 tail = max(len(bin(abs(tmant)))-2 - mant_dig, etiny - texp)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	460 if tail > 0:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	461 h = 1 << (tail-1)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	462 tmant = tmant // (2h) + bool(tmant & h and tmant & 3h-1)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	463 texp += tail
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	464 return math.ldexp(tmant, texp)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	465
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	466 test_values = [
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	467 ([], 0.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	468 ([0.0], 0.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	469 ([1e100, 1.0, -1e100, 1e-100, 1e50, -1.0, -1e50], 1e-100),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	470 ([2.053, -0.5, -2.0-54], 2.0**53-1.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	471 ([2.053, 1.0, 2.0-100], 2.0**53+2.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	472 ([2.053+10.0, 1.0, 2.0-100], 2.0**53+12.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	473 ([2.053-4.0, 0.5, 2.0-54], 2.0**53-3.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	474 ([1./n for n in range(1, 1001)],
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	475 float.fromhex('0x1.df11f45f4e61ap+2')),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	476 ([(-1.)**n/n for n in range(1, 1001)],
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	477 float.fromhex('-0x1.62a2af1bd3624p-1')),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	478 ([1.7(i+1)-1.7i for i in range(1000)] + [-1.7**1000], -1.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	479 ([1e16, 1., 1e-16], 10000000000000002.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	480 ([1e16-2., 1.-2.-53, -(1e16-2.), -(1.-2.-53)], 0.0),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	481 # exercise code for resizing partials array
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	482 ([2.n - 2.(n+50) + 2.**(n+52) for n in range(-1074, 972, 2)] +
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	483 [-2.**1022],
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	484 float.fromhex('0x1.5555555555555p+970')),
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	485 ]
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	486
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	487 for i, (vals, expected) in enumerate(test_values):
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	488 try:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	489 actual = math.fsum(vals)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	490 except OverflowError:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	491 self.fail("test %d failed: got OverflowError, expected %r "
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	492 "for math.fsum(%.100r)" % (i, expected, vals))
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	493 except ValueError:
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	494 self.fail("test %d failed: got ValueError, expected %r "
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	495 "for math.fsum(%.100r)" % (i, expected, vals))
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	496 self.assertEqual(actual, expected)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	497
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	498 from random import random, gauss, shuffle
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	499 for j in xrange(1000):
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	500 vals = [7, 1e100, -7, -1e100, -9e-20, 8e-20] * 10
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	501 s = 0
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	502 for i in xrange(200):
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	503 v = gauss(0, random()) ** 7 - s
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	504 s += v
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	505 vals.append(v)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	506 shuffle(vals)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	507
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	508 s = msum(vals)
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	509 self.assertEqual(msum(vals), math.fsum(vals))
347603f794d1 Rename testSum to testFsum and move it to proper place in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 48101 diff changeset	510
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	511 def testHypot(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	512 self.assertRaises(TypeError, math.hypot)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	513 self.ftest('hypot(0,0)', math.hypot(0,0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	514 self.ftest('hypot(3,4)', math.hypot(3,4), 5)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	515 self.assertEqual(math.hypot(NAN, INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	516 self.assertEqual(math.hypot(INF, NAN), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	517 self.assertEqual(math.hypot(NAN, NINF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	518 self.assertEqual(math.hypot(NINF, NAN), INF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	519 self.assertTrue(math.isnan(math.hypot(1.0, NAN)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	520 self.assertTrue(math.isnan(math.hypot(NAN, -2.0)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	521
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	522 def testLdexp(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	523 self.assertRaises(TypeError, math.ldexp)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	524 self.ftest('ldexp(0,1)', math.ldexp(0,1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	525 self.ftest('ldexp(1,1)', math.ldexp(1,1), 2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	526 self.ftest('ldexp(1,-1)', math.ldexp(1,-1), 0.5)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	527 self.ftest('ldexp(-1,1)', math.ldexp(-1,1), -2)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	528 self.assertRaises(OverflowError, math.ldexp, 1., 1000000)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	529 self.assertRaises(OverflowError, math.ldexp, -1., 1000000)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	530 self.assertEquals(math.ldexp(1., -1000000), 0.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	531 self.assertEquals(math.ldexp(-1., -1000000), -0.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	532 self.assertEquals(math.ldexp(INF, 30), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	533 self.assertEquals(math.ldexp(NINF, -213), NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	534 self.assertTrue(math.isnan(math.ldexp(NAN, 0)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	535
46797 fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	536 # large second argument
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	537 for n in [105, 10L5, 1010, 10L10, 1020, 1040]:
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	538 self.assertEquals(math.ldexp(INF, -n), INF)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	539 self.assertEquals(math.ldexp(NINF, -n), NINF)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	540 self.assertEquals(math.ldexp(1., -n), 0.)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	541 self.assertEquals(math.ldexp(-1., -n), -0.)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	542 self.assertEquals(math.ldexp(0., -n), 0.)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	543 self.assertEquals(math.ldexp(-0., -n), -0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	544 self.assertTrue(math.isnan(math.ldexp(NAN, -n)))
46797 fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	545
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	546 self.assertRaises(OverflowError, math.ldexp, 1., n)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	547 self.assertRaises(OverflowError, math.ldexp, -1., n)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	548 self.assertEquals(math.ldexp(0., n), 0.)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	549 self.assertEquals(math.ldexp(-0., n), -0.)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	550 self.assertEquals(math.ldexp(INF, n), INF)
fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	551 self.assertEquals(math.ldexp(NINF, n), NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	552 self.assertTrue(math.isnan(math.ldexp(NAN, n)))
46797 fd0b894bc90c Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and Mark Dickinson <dickinsm@gmail.com> parents: 46504 diff changeset	553
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	554 def testLog(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	555 self.assertRaises(TypeError, math.log)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	556 self.ftest('log(1/e)', math.log(1/math.e), -1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	557 self.ftest('log(1)', math.log(1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	558 self.ftest('log(e)', math.log(math.e), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	559 self.ftest('log(32,2)', math.log(32,2), 5)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	560 self.ftest('log(1040, 10)', math.log(1040, 10), 40)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	561 self.ftest('log(1040, 1020)', math.log(1040, 1020), 2)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	562 self.assertEquals(math.log(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	563 self.assertRaises(ValueError, math.log, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	564 self.assertTrue(math.isnan(math.log(NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	565
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	566 def testLog1p(self):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	567 self.assertRaises(TypeError, math.log1p)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	568 self.ftest('log1p(1/e -1)', math.log1p(1/math.e-1), -1)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	569 self.ftest('log1p(0)', math.log1p(0), 0)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	570 self.ftest('log1p(e-1)', math.log1p(math.e-1), 1)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	571 self.ftest('log1p(1)', math.log1p(1), math.log(2))
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	572 self.assertEquals(math.log1p(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	573 self.assertRaises(ValueError, math.log1p, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	574 self.assertTrue(math.isnan(math.log1p(NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	575 n= 2**90
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	576 self.assertAlmostEquals(math.log1p(n), 62.383246250395075)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	577 self.assertAlmostEquals(math.log1p(n), math.log1p(float(n)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	578
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	579 def testLog10(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	580 self.assertRaises(TypeError, math.log10)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	581 self.ftest('log10(0.1)', math.log10(0.1), -1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	582 self.ftest('log10(1)', math.log10(1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	583 self.ftest('log10(10)', math.log10(10), 1)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	584 self.assertEquals(math.log(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	585 self.assertRaises(ValueError, math.log10, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	586 self.assertTrue(math.isnan(math.log10(NAN)))
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	587
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	588 def testModf(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	589 self.assertRaises(TypeError, math.modf)
1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	590
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	591 def testmodf(name, (v1, v2), (e1, e2)):
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	592 if abs(v1-e1) > eps or abs(v2-e2):
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	593 self.fail('%s returned %r, expected %r'%\
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	594 (name, (v1,v2), (e1,e2)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	595
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	596 testmodf('modf(1.5)', math.modf(1.5), (0.5, 1.0))
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	597 testmodf('modf(-1.5)', math.modf(-1.5), (-0.5, -1.0))
40284 ff678669aa6e Whitespace normalization. Tim Peters <tim.peters@gmail.com> parents: 40270 diff changeset	598
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	599 self.assertEquals(math.modf(INF), (0.0, INF))
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	600 self.assertEquals(math.modf(NINF), (-0.0, NINF))
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	601
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	602 modf_nan = math.modf(NAN)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	603 self.assertTrue(math.isnan(modf_nan[0]))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	604 self.assertTrue(math.isnan(modf_nan[1]))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	605
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	606 def testPow(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	607 self.assertRaises(TypeError, math.pow)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	608 self.ftest('pow(0,1)', math.pow(0,1), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	609 self.ftest('pow(1,0)', math.pow(1,0), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	610 self.ftest('pow(2,1)', math.pow(2,1), 2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	611 self.ftest('pow(2,-1)', math.pow(2,-1), 0.5)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	612 self.assertEqual(math.pow(INF, 1), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	613 self.assertEqual(math.pow(NINF, 1), NINF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	614 self.assertEqual((math.pow(1, INF)), 1.)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	615 self.assertEqual((math.pow(1, NINF)), 1.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	616 self.assertTrue(math.isnan(math.pow(NAN, 1)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	617 self.assertTrue(math.isnan(math.pow(2, NAN)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	618 self.assertTrue(math.isnan(math.pow(0, NAN)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	619 self.assertEqual(math.pow(1, NAN), 1)
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	620
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	621 # pow(0., x)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	622 self.assertEqual(math.pow(0., INF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	623 self.assertEqual(math.pow(0., 3.), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	624 self.assertEqual(math.pow(0., 2.3), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	625 self.assertEqual(math.pow(0., 2.), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	626 self.assertEqual(math.pow(0., 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	627 self.assertEqual(math.pow(0., -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	628 self.assertRaises(ValueError, math.pow, 0., -2.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	629 self.assertRaises(ValueError, math.pow, 0., -2.3)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	630 self.assertRaises(ValueError, math.pow, 0., -3.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	631 self.assertRaises(ValueError, math.pow, 0., NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	632 self.assertTrue(math.isnan(math.pow(0., NAN)))
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	633
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	634 # pow(INF, x)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	635 self.assertEqual(math.pow(INF, INF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	636 self.assertEqual(math.pow(INF, 3.), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	637 self.assertEqual(math.pow(INF, 2.3), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	638 self.assertEqual(math.pow(INF, 2.), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	639 self.assertEqual(math.pow(INF, 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	640 self.assertEqual(math.pow(INF, -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	641 self.assertEqual(math.pow(INF, -2.), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	642 self.assertEqual(math.pow(INF, -2.3), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	643 self.assertEqual(math.pow(INF, -3.), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	644 self.assertEqual(math.pow(INF, NINF), 0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	645 self.assertTrue(math.isnan(math.pow(INF, NAN)))
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	646
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	647 # pow(-0., x)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	648 self.assertEqual(math.pow(-0., INF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	649 self.assertEqual(math.pow(-0., 3.), -0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	650 self.assertEqual(math.pow(-0., 2.3), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	651 self.assertEqual(math.pow(-0., 2.), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	652 self.assertEqual(math.pow(-0., 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	653 self.assertEqual(math.pow(-0., -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	654 self.assertRaises(ValueError, math.pow, -0., -2.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	655 self.assertRaises(ValueError, math.pow, -0., -2.3)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	656 self.assertRaises(ValueError, math.pow, -0., -3.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	657 self.assertRaises(ValueError, math.pow, -0., NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	658 self.assertTrue(math.isnan(math.pow(-0., NAN)))
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	659
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	660 # pow(NINF, x)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	661 self.assertEqual(math.pow(NINF, INF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	662 self.assertEqual(math.pow(NINF, 3.), NINF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	663 self.assertEqual(math.pow(NINF, 2.3), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	664 self.assertEqual(math.pow(NINF, 2.), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	665 self.assertEqual(math.pow(NINF, 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	666 self.assertEqual(math.pow(NINF, -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	667 self.assertEqual(math.pow(NINF, -2.), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	668 self.assertEqual(math.pow(NINF, -2.3), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	669 self.assertEqual(math.pow(NINF, -3.), -0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	670 self.assertEqual(math.pow(NINF, NINF), 0.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	671 self.assertTrue(math.isnan(math.pow(NINF, NAN)))
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	672
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	673 # pow(-1, x)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	674 self.assertEqual(math.pow(-1., INF), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	675 self.assertEqual(math.pow(-1., 3.), -1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	676 self.assertRaises(ValueError, math.pow, -1., 2.3)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	677 self.assertEqual(math.pow(-1., 2.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	678 self.assertEqual(math.pow(-1., 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	679 self.assertEqual(math.pow(-1., -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	680 self.assertEqual(math.pow(-1., -2.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	681 self.assertRaises(ValueError, math.pow, -1., -2.3)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	682 self.assertEqual(math.pow(-1., -3.), -1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	683 self.assertEqual(math.pow(-1., NINF), 1.)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	684 self.assertTrue(math.isnan(math.pow(-1., NAN)))
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	685
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	686 # pow(1, x)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	687 self.assertEqual(math.pow(1., INF), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	688 self.assertEqual(math.pow(1., 3.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	689 self.assertEqual(math.pow(1., 2.3), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	690 self.assertEqual(math.pow(1., 2.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	691 self.assertEqual(math.pow(1., 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	692 self.assertEqual(math.pow(1., -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	693 self.assertEqual(math.pow(1., -2.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	694 self.assertEqual(math.pow(1., -2.3), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	695 self.assertEqual(math.pow(1., -3.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	696 self.assertEqual(math.pow(1., NINF), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	697 self.assertEqual(math.pow(1., NAN), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	698
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	699 # pow(x, 0) should be 1 for any x
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	700 self.assertEqual(math.pow(2.3, 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	701 self.assertEqual(math.pow(-2.3, 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	702 self.assertEqual(math.pow(NAN, 0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	703 self.assertEqual(math.pow(2.3, -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	704 self.assertEqual(math.pow(-2.3, -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	705 self.assertEqual(math.pow(NAN, -0.), 1.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	706
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	707 # pow(x, y) is invalid if x is negative and y is not integral
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	708 self.assertRaises(ValueError, math.pow, -1., 2.3)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	709 self.assertRaises(ValueError, math.pow, -15., -3.1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	710
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	711 # pow(x, NINF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	712 self.assertEqual(math.pow(1.9, NINF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	713 self.assertEqual(math.pow(1.1, NINF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	714 self.assertEqual(math.pow(0.9, NINF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	715 self.assertEqual(math.pow(0.1, NINF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	716 self.assertEqual(math.pow(-0.1, NINF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	717 self.assertEqual(math.pow(-0.9, NINF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	718 self.assertEqual(math.pow(-1.1, NINF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	719 self.assertEqual(math.pow(-1.9, NINF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	720
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	721 # pow(x, INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	722 self.assertEqual(math.pow(1.9, INF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	723 self.assertEqual(math.pow(1.1, INF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	724 self.assertEqual(math.pow(0.9, INF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	725 self.assertEqual(math.pow(0.1, INF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	726 self.assertEqual(math.pow(-0.1, INF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	727 self.assertEqual(math.pow(-0.9, INF), 0.)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	728 self.assertEqual(math.pow(-1.1, INF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	729 self.assertEqual(math.pow(-1.9, INF), INF)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	730
46500 a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	731 # pow(x, y) should work for x negative, y an integer
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	732 self.ftest('(-2.)**3.', math.pow(-2.0, 3.0), -8.0)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	733 self.ftest('(-2.)**2.', math.pow(-2.0, 2.0), 4.0)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	734 self.ftest('(-2.)**1.', math.pow(-2.0, 1.0), -2.0)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	735 self.ftest('(-2.)**0.', math.pow(-2.0, 0.0), 1.0)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	736 self.ftest('(-2.)**-0.', math.pow(-2.0, -0.0), 1.0)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	737 self.ftest('(-2.)**-1.', math.pow(-2.0, -1.0), -0.5)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	738 self.ftest('(-2.)**-2.', math.pow(-2.0, -2.0), 0.25)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	739 self.ftest('(-2.)**-3.', math.pow(-2.0, -3.0), -0.125)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	740 self.assertRaises(ValueError, math.pow, -2.0, -0.5)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	741 self.assertRaises(ValueError, math.pow, -2.0, 0.5)
a20def0101de Yet more explicit special case handling to make Mark Dickinson <dickinsm@gmail.com> parents: 46498 diff changeset	742
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	743 # the following tests have been commented out since they don't
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	744 # really belong here: the implementation of ** for floats is
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	745 # independent of the implemention of math.pow
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	746 #self.assertEqual(1**NAN, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	747 #self.assertEqual(1**INF, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	748 #self.assertEqual(1**NINF, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	749 #self.assertEqual(1**0, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	750 #self.assertEqual(1.**NAN, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	751 #self.assertEqual(1.**INF, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	752 #self.assertEqual(1.**NINF, 1)
82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	753 #self.assertEqual(1.**0, 1)
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	754
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	755 def testRadians(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	756 self.assertRaises(TypeError, math.radians)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	757 self.ftest('radians(180)', math.radians(180), math.pi)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	758 self.ftest('radians(90)', math.radians(90), math.pi/2)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	759 self.ftest('radians(-45)', math.radians(-45), -math.pi/4)
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	760
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	761 def testSin(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	762 self.assertRaises(TypeError, math.sin)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	763 self.ftest('sin(0)', math.sin(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	764 self.ftest('sin(pi/2)', math.sin(math.pi/2), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	765 self.ftest('sin(-pi/2)', math.sin(-math.pi/2), -1)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	766 try:
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	767 self.assertTrue(math.isnan(math.sin(INF)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	768 self.assertTrue(math.isnan(math.sin(NINF)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	769 except ValueError:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	770 self.assertRaises(ValueError, math.sin, INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	771 self.assertRaises(ValueError, math.sin, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	772 self.assertTrue(math.isnan(math.sin(NAN)))
23426 1157281f00a0 Adds tests for degrees() and radians() functions added to mathmodule. Raymond Hettinger <python@rcn.com> parents: 19750 diff changeset	773
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	774 def testSinh(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	775 self.assertRaises(TypeError, math.sinh)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	776 self.ftest('sinh(0)', math.sinh(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	777 self.ftest('sinh(1)2-cosh(1)2', math.sinh(1)2-math.cosh(1)2, -1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	778 self.ftest('sinh(1)+sinh(-1)', math.sinh(1)+math.sinh(-1), 0)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	779 self.assertEquals(math.sinh(INF), INF)
46486 82d85a05923b Additional tests for math.pow, and extra special-case Mark Dickinson <dickinsm@gmail.com> parents: 46473 diff changeset	780 self.assertEquals(math.sinh(NINF), NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	781 self.assertTrue(math.isnan(math.sinh(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	782
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	783 def testSqrt(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	784 self.assertRaises(TypeError, math.sqrt)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	785 self.ftest('sqrt(0)', math.sqrt(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	786 self.ftest('sqrt(1)', math.sqrt(1), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	787 self.ftest('sqrt(4)', math.sqrt(4), 2)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	788 self.assertEquals(math.sqrt(INF), INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	789 self.assertRaises(ValueError, math.sqrt, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	790 self.assertTrue(math.isnan(math.sqrt(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	791
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	792 def testTan(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	793 self.assertRaises(TypeError, math.tan)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	794 self.ftest('tan(0)', math.tan(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	795 self.ftest('tan(pi/4)', math.tan(math.pi/4), 1)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	796 self.ftest('tan(-pi/4)', math.tan(-math.pi/4), -1)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	797 try:
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	798 self.assertTrue(math.isnan(math.tan(INF)))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	799 self.assertTrue(math.isnan(math.tan(NINF)))
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	800 except:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	801 self.assertRaises(ValueError, math.tan, INF)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	802 self.assertRaises(ValueError, math.tan, NINF)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	803 self.assertTrue(math.isnan(math.tan(NAN)))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	804
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	805 def testTanh(self):
40270 1715e6a0aee9 Add tests for basic argument errors. Walter Dörwald <walter@livinglogic.de> parents: 40219 diff changeset	806 self.assertRaises(TypeError, math.tanh)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	807 self.ftest('tanh(0)', math.tanh(0), 0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	808 self.ftest('tanh(1)+tanh(-1)', math.tanh(1)+math.tanh(-1), 0)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	809 self.ftest('tanh(inf)', math.tanh(INF), 1)
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	810 self.ftest('tanh(-inf)', math.tanh(NINF), -1)
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	811 self.assertTrue(math.isnan(math.tanh(NAN)))
46504 60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	812 # check that tanh(-0.) == -0. on IEEE 754 systems
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	813 if float.__getformat__("double").startswith("IEEE"):
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	814 self.assertEqual(math.tanh(-0.), -0.)
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	815 self.assertEqual(math.copysign(1., math.tanh(-0.)),
60f4456fa338 Add test for tanh(-0.) == -0. on IEEE 754 systems Mark Dickinson <dickinsm@gmail.com> parents: 46500 diff changeset	816 math.copysign(1., -0.))
3950 75d016c97d1c Added test for math module Guido van Rossum <guido@python.org> parents: diff changeset	817
45079 492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	818 def test_trunc(self):
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	819 self.assertEqual(math.trunc(1), 1)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	820 self.assertEqual(math.trunc(-1), -1)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	821 self.assertEqual(type(math.trunc(1)), int)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	822 self.assertEqual(type(math.trunc(1.5)), int)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	823 self.assertEqual(math.trunc(1.5), 1)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	824 self.assertEqual(math.trunc(-1.5), -1)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	825 self.assertEqual(math.trunc(1.999999), 1)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	826 self.assertEqual(math.trunc(-1.999999), -1)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	827 self.assertEqual(math.trunc(-0.999999), -0)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	828 self.assertEqual(math.trunc(-100.999), -100)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	829
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	830 class TestTrunc(object):
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	831 def __trunc__(self):
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	832 return 23
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	833
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	834 class TestNoTrunc(object):
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	835 pass
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	836
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	837 self.assertEqual(math.trunc(TestTrunc()), 23)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	838
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	839 self.assertRaises(TypeError, math.trunc)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	840 self.assertRaises(TypeError, math.trunc, 1, 2)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	841 # XXX: This is not ideal, but see the comment in math_trunc().
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	842 self.assertRaises(AttributeError, math.trunc, TestNoTrunc())
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	843
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	844 t = TestNoTrunc()
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	845 t.__trunc__ = lambda *args: args
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	846 self.assertEquals((), math.trunc(t))
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	847 self.assertRaises(TypeError, math.trunc, t, 0)
492b302aded6 Move __builtins__.trunc() to math.trunc() per Jeffrey Yasskin <jyasskin@gmail.com> parents: 44488 diff changeset	848
44440 6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	849 def testCopysign(self):
6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	850 self.assertEqual(math.copysign(1, 42), 1.0)
6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	851 self.assertEqual(math.copysign(0., 42), 0.0)
6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	852 self.assertEqual(math.copysign(1., -42), -1.0)
6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	853 self.assertEqual(math.copysign(3, 0.), 3.0)
6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	854 self.assertEqual(math.copysign(4., -0.), -4.0)
6208b17d0dbe Added copysign(x, y) function to the math module Christian Heimes <christian@cheimes.de> parents: 44437 diff changeset	855
44437 968bda81e6c8 Added math.isinf() and math.isnan() Christian Heimes <christian@cheimes.de> parents: 44432 diff changeset	856 def testIsnan(self):
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	857 self.assertTrue(math.isnan(float("nan")))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	858 self.assertTrue(math.isnan(float("inf")* 0.))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	859 self.assertFalse(math.isnan(float("inf")))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	860 self.assertFalse(math.isnan(0.))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	861 self.assertFalse(math.isnan(1.))
44437 968bda81e6c8 Added math.isinf() and math.isnan() Christian Heimes <christian@cheimes.de> parents: 44432 diff changeset	862
968bda81e6c8 Added math.isinf() and math.isnan() Christian Heimes <christian@cheimes.de> parents: 44432 diff changeset	863 def testIsinf(self):
55002 6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	864 self.assertTrue(math.isinf(float("inf")))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	865 self.assertTrue(math.isinf(float("-inf")))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	866 self.assertTrue(math.isinf(1E400))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	867 self.assertTrue(math.isinf(-1E400))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	868 self.assertFalse(math.isinf(float("nan")))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	869 self.assertFalse(math.isinf(0.))
6768b2350c57 convert usage of fail* to assert* Benjamin Peterson <benjamin@python.org> parents: 53351 diff changeset	870 self.assertFalse(math.isinf(1.))
44437 968bda81e6c8 Added math.isinf() and math.isnan() Christian Heimes <christian@cheimes.de> parents: 44432 diff changeset	871
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	872 # RED_FLAG 16-Oct-2000 Tim
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	873 # While 2.0 is more consistent about exceptions than previous releases, it
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	874 # still fails this part of the test on some platforms. For now, we only
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	875 # run test_exceptions() in verbose mode, so that this isn't normally
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	876 # tested.
15170 09c7ac188ce2 Stop raising OverflowError on underflows reported by libm (errno==ERANGE and Tim Peters <tim.peters@gmail.com> parents: 13912 diff changeset	877
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	878 if verbose:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	879 def test_exceptions(self):
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	880 try:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	881 x = math.exp(-1000000000)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	882 except:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	883 # mathmodule.c is failing to weed out underflows from libm, or
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	884 # we've got an fp format with huge dynamic range
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	885 self.fail("underflowing exp() should not have raised "
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	886 "an exception")
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	887 if x != 0:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	888 self.fail("underflowing exp() should have returned 0")
15170 09c7ac188ce2 Stop raising OverflowError on underflows reported by libm (errno==ERANGE and Tim Peters <tim.peters@gmail.com> parents: 13912 diff changeset	889
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	890 # If this fails, probably using a strict IEEE-754 conforming libm, and x
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	891 # is +Inf afterwards. But Python wants overflows detected by default.
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	892 try:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	893 x = math.exp(1000000000)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	894 except OverflowError:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	895 pass
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	896 else:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	897 self.fail("overflowing exp() didn't trigger OverflowError")
15170 09c7ac188ce2 Stop raising OverflowError on underflows reported by libm (errno==ERANGE and Tim Peters <tim.peters@gmail.com> parents: 13912 diff changeset	898
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	899 # If this fails, it could be a puzzle. One odd possibility is that
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	900 # mathmodule.c's macros are getting confused while comparing
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	901 # Inf (HUGE_VAL) to a NaN, and artificially setting errno to ERANGE
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	902 # as a result (and so raising OverflowError instead).
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	903 try:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	904 x = math.sqrt(-1.0)
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	905 except ValueError:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	906 pass
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	907 else:
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	908 self.fail("sqrt(-1) didn't raise ValueError")
15170 09c7ac188ce2 Stop raising OverflowError on underflows reported by libm (errno==ERANGE and Tim Peters <tim.peters@gmail.com> parents: 13912 diff changeset	909
56089 f2555ad5fe09 Use skipUnless to skip math module tests on non-IEEE 754 platforms. Mark Dickinson <dickinsm@gmail.com> parents: 55002 diff changeset	910 @requires_IEEE_754
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	911 def test_testfile(self):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	912 for id, fn, ar, ai, er, ei, flags in parse_testfile(test_file):
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	913 # Skip if either the input or result is complex, or if
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	914 # flags is nonempty
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	915 if ai != 0. or ei != 0. or flags:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	916 continue
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	917 if fn in ['rect', 'polar']:
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	918 # no real versions of rect, polar
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	919 continue
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	920 func = getattr(math, fn)
46498 31ff59d984bd Report additional diagnostic information in Mark Dickinson <dickinsm@gmail.com> parents: 46486 diff changeset	921 try:
31ff59d984bd Report additional diagnostic information in Mark Dickinson <dickinsm@gmail.com> parents: 46486 diff changeset	922 result = func(ar)
31ff59d984bd Report additional diagnostic information in Mark Dickinson <dickinsm@gmail.com> parents: 46486 diff changeset	923 except ValueError:
31ff59d984bd Report additional diagnostic information in Mark Dickinson <dickinsm@gmail.com> parents: 46486 diff changeset	924 message = ("Unexpected ValueError in " +
31ff59d984bd Report additional diagnostic information in Mark Dickinson <dickinsm@gmail.com> parents: 46486 diff changeset	925 "test %s:%s(%r)\n" % (id, fn, ar))
31ff59d984bd Report additional diagnostic information in Mark Dickinson <dickinsm@gmail.com> parents: 46486 diff changeset	926 self.fail(message)
47218 5a29552412fa Better error reporting in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 47217 diff changeset	927 except OverflowError:
5a29552412fa Better error reporting in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 47217 diff changeset	928 message = ("Unexpected OverflowError in " +
5a29552412fa Better error reporting in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 47217 diff changeset	929 "test %s:%s(%r)\n" % (id, fn, ar))
5a29552412fa Better error reporting in test_math.py Mark Dickinson <dickinsm@gmail.com> parents: 47217 diff changeset	930 self.fail(message)
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	931 self.ftest("%s:%s(%r)" % (id, fn, ar), result, er)
15247 dd0d199674f8 Test for math.* exceptional behavior only in verbose mode, so that the Tim Peters <tim.peters@gmail.com> parents: 15171 diff changeset	932
56268 b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	933 @unittest.skipUnless(float.__getformat__("double").startswith("IEEE"),
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	934 "test requires IEEE 754 doubles")
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	935 def test_mtestfile(self):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	936 ALLOWED_ERROR = 20 # permitted error, in ulps
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	937 fail_fmt = "{}:{}({!r}): expected {!r}, got {!r}"
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	938
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	939 failures = []
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	940 for id, fn, arg, expected, flags in parse_mtestfile(math_testcases):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	941 func = getattr(math, fn)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	942
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	943 if 'invalid' in flags or 'divide-by-zero' in flags:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	944 expected = 'ValueError'
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	945 elif 'overflow' in flags:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	946 expected = 'OverflowError'
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	947
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	948 try:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	949 got = func(arg)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	950 except ValueError:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	951 got = 'ValueError'
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	952 except OverflowError:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	953 got = 'OverflowError'
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	954
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	955 diff_ulps = None
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	956 if isinstance(got, float) and isinstance(expected, float):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	957 if math.isnan(expected) and math.isnan(got):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	958 continue
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	959 if not math.isnan(expected) and not math.isnan(got):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	960 diff_ulps = to_ulps(expected) - to_ulps(got)
56307 5f245da72aeb Fix buggy accuracy test Mark Dickinson <dickinsm@gmail.com> parents: 56268 diff changeset	961 if abs(diff_ulps) <= ALLOWED_ERROR:
56268 b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	962 continue
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	963
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	964 if isinstance(got, str) and isinstance(expected, str):
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	965 if got == expected:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	966 continue
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	967
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	968 fail_msg = fail_fmt.format(id, fn, arg, expected, got)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	969 if diff_ulps is not None:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	970 fail_msg += ' ({} ulps)'.format(diff_ulps)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	971 failures.append(fail_msg)
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	972
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	973 if failures:
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	974 self.fail('Failures in test_mtestfile:\n ' +
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	975 '\n '.join(failures))
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	976
b50dd17dfe26 Issue #3366: Add gamma function to math module. Mark Dickinson <dickinsm@gmail.com> parents: 56089 diff changeset	977
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	978 def test_main():
46473 5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	979 from doctest import DocFileSuite
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	980 suite = unittest.TestSuite()
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	981 suite.addTest(unittest.makeSuite(MathTests))
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	982 suite.addTest(DocFileSuite("ieee754.txt"))
5bc7b20dc04a I finally got the time to update and merge Mark's and my trunk-math branch. The patch is collaborated work of Mark Dickinson and me. It was mostly done a few months ago. The patch fixes a lot of loose ends and edge cases related to operations with NaN, INF, very small values and complex math. Christian Heimes <christian@cheimes.de> parents: 45079 diff changeset	983 run_unittest(suite)
40219 69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	984
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	985 if __name__ == '__main__':
69728a7d2312 Convert test_math to unittest. Georg Brandl <georg@python.org> parents: 31515 diff changeset	986 test_main()

Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_math.py @ 57303:4aa4c19dfaed legacy-trunk