Mercurial > cpython-lru_cache-weakref

diff Lib/json/decoder.py @ 46691:b0fb55ece89f legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Intern static string Use float constructors instead of magic code for float constants
author Christian Heimes <christian@cheimes.de>
date Tue, 06 May 2008 16:18:41 +0000
parents 4ded35754cb7
children d95e5add3ca4
line wrap: on
line diff
--- a/Lib/json/decoder.py	Tue May 06 07:05:18 2008 +0000
+++ b/Lib/json/decoder.py	Tue May 06 16:18:41 2008 +0000
@@ -14,17 +14,7 @@
 
 FLAGS = re.VERBOSE | re.MULTILINE | re.DOTALL
 
-
-def _floatconstants():
-    import struct
-    import sys
-    _BYTES = '7FF80000000000007FF0000000000000'.decode('hex')
-    if sys.byteorder != 'big':
-        _BYTES = _BYTES[:8][::-1] + _BYTES[8:][::-1]
-    nan, inf = struct.unpack('dd', _BYTES)
-    return nan, inf, -inf
-
-NaN, PosInf, NegInf = _floatconstants()
+NaN, PosInf, NegInf = float('nan'), float('inf'), float('-inf')
 
 
 def linecol(doc, pos):