cpython-lru_cache-weakref: Python/pymath.c history

Dummy-merge 3.1 branch into 3.2 branch.

Sat, 05 Mar 2011 15:15:55 +0100

Dummy-merge 3.1 branch into 3.2 branch.

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Sun, 09 May 2010 15:52:27 +0000

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svn+ssh://pythondev@svn.python.org/python/trunk

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r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines

Untabify C files. Will watch buildbots.
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Mon, 21 Dec 2009 15:27:41 +0000

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r76978 | mark.dickinson | 2009-12-21 15:22:00 +0000 (Mon, 21 Dec 2009) | 3 lines

Issue #7518: Move substitute definitions of C99 math functions from
pymath.c to Modules/_math.c.
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Sun, 09 May 2010 16:14:21 +0000

Recorded merge of revisions 81032 via svnmerge from
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r81032 | antoine.pitrou | 2010-05-09 17:52:27 +0200 (dim., 09 mai 2010) | 9 lines

Recorded merge of revisions 81029 via svnmerge from
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r81029 | antoine.pitrou | 2010-05-09 16:46:46 +0200 (dim., 09 mai 2010) | 3 lines

Untabify C files. Will watch buildbots.
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The SSE2 detection and enabling could potentially cause

Sat, 18 Apr 2009 20:17:52 +0000

The SSE2 detection and enabling could potentially cause
problems for binary distributions of Python in situations
where the build machine has SSE2 but the target machine
does not.

Therefore, don't enable SSE2 instructions automatically on x86.

Merged revisions 71705 via svnmerge from

Sat, 18 Apr 2009 14:14:48 +0000

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r71705 | mark.dickinson | 2009-04-18 15:13:43 +0100 (Sat, 18 Apr 2009) | 2 lines

copysign shouldn't be declared as static in pymath.c
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Add check for C99 round function to configure, and define

Sat, 18 Apr 2009 13:58:18 +0000

Add check for C99 round function to configure, and define
a fallback function if round doesn't exist.

Issue #1580: use short float repr where possible.

Thu, 16 Apr 2009 19:52:09 +0000

Issue #1580: use short float repr where possible.
- incorporate and adapt David Gay's dtoa and strtod
into the Python core
- on platforms where we can use Gay's code (almost
all!), repr(float) is based on the shortest
sequence of decimal digits that rounds correctly.
- add sys.float_repr_style attribute to indicate
whether we're using Gay's code or not
- add autoconf magic to detect and enable SSE2
instructions on x86/gcc
- slight change to repr and str: repr switches
to exponential notation at 1e16 instead of
1e17, str switches at 1e11 instead of 1e12

Dummy-merge 2.6 branch into 2.7 branch.

Sat, 05 Mar 2011 15:15:07 +0100

Dummy-merge 2.6 branch into 2.7 branch.

Untabify C files. Will watch buildbots.

Sun, 09 May 2010 14:46:46 +0000

Untabify C files. Will watch buildbots.

Issue #7518: Move substitute definitions of C99 math functions from

Mon, 21 Dec 2009 15:22:00 +0000

Issue #7518: Move substitute definitions of C99 math functions from
pymath.c to Modules/_math.c.

Issue #7117 (backport py3k float repr) continued:

Sat, 24 Oct 2009 13:28:38 +0000

Issue #7117 (backport py3k float repr) continued:
- add double endianness detection to configure script
- add configure-time check to see whether we can use inline
assembly to get and set x87 control word in configure script
- add functions to get and set x87 control word in Python/pymath.c
- add pyport.h logic to determine whether it's safe to use the
short float repr or not

Backport r71704 (add configure check for C99 round function) to trunk.

Sat, 18 Apr 2009 14:41:37 +0000

Backport r71704 (add configure check for C99 round function) to trunk.

copysign shouldn't be declared as static in pymath.c

Sat, 18 Apr 2009 14:13:43 +0000

copysign shouldn't be declared as static in pymath.c

Merged revisions 69459 via svnmerge from

Mon, 09 Feb 2009 17:15:59 +0000

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r69459 | mark.dickinson | 2009-02-09 14:18:43 +0000 (Mon, 09 Feb 2009) | 3 lines

Issue #4575: fix Py_IS_INFINITY macro to work correctly on x87 FPUs.
It now forces its argument to double before testing for infinity.
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Recorded merge of revisions 81029 via svnmerge from

Sun, 09 May 2010 15:15:40 +0000

Issue #5724: Fix test_cmath failures on Solaris 10.

Mon, 04 May 2009 13:59:04 +0000

Issue #5724: Fix test_cmath failures on Solaris 10.

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Sat, 18 Apr 2009 14:21:40 +0000

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r71706 | mark.dickinson | 2009-04-18 15:14:48 +0100 (Sat, 18 Apr 2009) | 9 lines

Merged revisions 71705 via svnmerge from
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r71705 | mark.dickinson | 2009-04-18 15:13:43 +0100 (Sat, 18 Apr 2009) | 2 lines

copysign shouldn't be declared as static in pymath.c
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any platform without HAVE_LOG1P should have DBL_EPSILON in

Mon, 22 Sep 2008 14:11:41 +0000

any platform without HAVE_LOG1P should have DBL_EPSILON in

Part of source_os2emx.patch in issue 3868
Reviewed by Amaury Forgeot d'Arc

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Sat, 19 Apr 2008 00:31:39 +0000

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r62380 | christian.heimes | 2008-04-19 01:13:07 +0200 (Sat, 19 Apr 2008) | 3 lines

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.

The patch also adds acosh, asinh, atanh, log1p and copysign to all platforms. Finally it fixes differences between platforms like different results or exceptions for edge cases. Have fun :)
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r62382 | christian.heimes | 2008-04-19 01:40:40 +0200 (Sat, 19 Apr 2008) | 2 lines

Added new files to Windows project files
More Windows related fixes are coming soon
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r62383 | christian.heimes | 2008-04-19 01:49:11 +0200 (Sat, 19 Apr 2008) | 1 line

Stupid me. Py_RETURN_NAN should actually return something ...
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