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* Issue #14521: Make result of float('nan') and float('-nan') more consistent ↵Mark Dickinson2012-04-291-5/+45
| | | | across platforms. Further, don't rely on Py_HUGE_VAL for float('inf').
* Issue #8914: fix various warnings from the Clang static analyzer v254.Brett Cannon2011-02-221-2/+2
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* Remove unnecessary assignments.Mark Dickinson2010-05-131-4/+1
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* Merged revisions 77691,77698,77713-77714 via svnmerge fromMark Dickinson2010-01-241-68/+121
| | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77691 | mark.dickinson | 2010-01-22 16:18:09 +0000 (Fri, 22 Jan 2010) | 1 line Correct typo in comment. ........ r77698 | mark.dickinson | 2010-01-22 17:04:07 +0000 (Fri, 22 Jan 2010) | 3 lines Issue #7743: Fix a potential incorrect rounding bug in dtoa.c (2nd bug in issue 7743). ........ r77713 | mark.dickinson | 2010-01-23 20:48:56 +0000 (Sat, 23 Jan 2010) | 3 lines Issue #7743: Add checks for zero inputs to the lshift and mult functions; this fixes the first bug described in issue #7743. ........ r77714 | mark.dickinson | 2010-01-23 21:25:53 +0000 (Sat, 23 Jan 2010) | 1 line dtoa.c fix from upstream that fixes incorrectly rounded results for certain subnormals that are also halfway cases. ........
* Merged revisions 77614-77616,77663 via svnmerge fromMark Dickinson2010-01-211-185/+239
| | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77614 | mark.dickinson | 2010-01-20 17:36:31 +0000 (Wed, 20 Jan 2010) | 5 lines Various dtoa.c cleanups. 1. Despagghetify _Py_dg_strtod parsing code and exit points. 2. Simplify bigcomp comparison loop. 3. Don't set ERANGE on _Py_dg_strtod underflow (it was set inconsistently anyway). 4. Remove unused dsign field from BCinfo struct. ........ r77615 | mark.dickinson | 2010-01-20 18:02:41 +0000 (Wed, 20 Jan 2010) | 1 line Don't try to put a value into a NULL pointer. ........ r77616 | mark.dickinson | 2010-01-20 21:23:25 +0000 (Wed, 20 Jan 2010) | 1 line Additional explanatory comments for _Py_dg_strtod. ........ r77663 | mark.dickinson | 2010-01-21 17:02:53 +0000 (Thu, 21 Jan 2010) | 1 line Additional testcases for strtod. ........
* Merged revisions 77589 via svnmerge fromMark Dickinson2010-01-171-0/+98
| | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77589 | mark.dickinson | 2010-01-17 20:57:56 +0000 (Sun, 17 Jan 2010) | 7 lines Issue #7632: When Py_USING_MEMORY_DEBUGGER is defined, disable the private memory allocation scheme in dtoa.c, along with a piece of code that caches powers of 5 for future use. This makes it easier to detect dtoa.c memory leaks with Valgrind or similar tools. Patch by Stefan Krah. ........
* Merged revisions 77578 via svnmerge fromMark Dickinson2010-01-171-1/+7
| | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77578 | mark.dickinson | 2010-01-17 13:37:57 +0000 (Sun, 17 Jan 2010) | 2 lines Issue #7632: Fix a memory leak in _Py_dg_strtod. ........
* Merged revisions 77519,77530,77533 via svnmerge fromMark Dickinson2010-01-161-37/+89
| | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77519 | mark.dickinson | 2010-01-16 10:44:00 +0000 (Sat, 16 Jan 2010) | 5 lines Issue #7632: Fix a serious wrong output bug for string -> float conversion. Also remove some now unused variables, and add comments clarifying the possible outputs of the parsing section of _Py_dg_strtod. Thanks Eric Smith for reviewing. ........ r77530 | mark.dickinson | 2010-01-16 17:57:49 +0000 (Sat, 16 Jan 2010) | 3 lines Issue #7632: Fix one more case of incorrect rounding for str -> float conversion (see bug 5 in the issue tracker). ........ r77533 | mark.dickinson | 2010-01-16 18:06:17 +0000 (Sat, 16 Jan 2010) | 1 line Fix multiple uses of variable 'L' in _Py_dg_strtod, where one use requires an unsigned long and the other a signed long. See also r77421. ........
* Merged revisions 77477-77478,77481-77483,77490-77493 via svnmerge fromMark Dickinson2010-01-141-113/+145
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77477 | mark.dickinson | 2010-01-13 18:21:53 +0000 (Wed, 13 Jan 2010) | 1 line Add comments explaining the role of the bigcomp function in dtoa.c. ........ r77478 | mark.dickinson | 2010-01-13 19:02:37 +0000 (Wed, 13 Jan 2010) | 1 line Clarify that sulp expects a nonnegative input, but that +0.0 is fine. ........ r77481 | mark.dickinson | 2010-01-13 20:55:03 +0000 (Wed, 13 Jan 2010) | 1 line Simplify and annotate the bigcomp function, removing unused special cases. ........ r77482 | mark.dickinson | 2010-01-13 22:15:53 +0000 (Wed, 13 Jan 2010) | 1 line Fix buggy comparison: LHS of comparison was being treated as unsigned. ........ r77483 | mark.dickinson | 2010-01-13 22:20:10 +0000 (Wed, 13 Jan 2010) | 1 line More dtoa.c cleanup; remove the need for bc.dplen, bc.dp0 and bc.dp1. ........ r77490 | mark.dickinson | 2010-01-14 13:02:36 +0000 (Thu, 14 Jan 2010) | 1 line Fix off-by-one error introduced in r77483. I have a test for this, but it currently fails due to a different dtoa.c bug; I'll add the test once that bug is fixed. ........ r77491 | mark.dickinson | 2010-01-14 13:14:49 +0000 (Thu, 14 Jan 2010) | 1 line Issue 7632: fix a dtoa.c bug (bug 6) causing incorrect rounding. Tests to follow. ........ r77492 | mark.dickinson | 2010-01-14 14:40:20 +0000 (Thu, 14 Jan 2010) | 1 line Issue 7632: fix incorrect rounding for long input strings with values very close to a power of 2. (See Bug 4 in the tracker discussion.) ........ r77493 | mark.dickinson | 2010-01-14 15:22:33 +0000 (Thu, 14 Jan 2010) | 1 line Issue #7632: add tests for bugs fixed so far. ........
* Merged revisions 77410,77421,77450-77451 via svnmerge fromMark Dickinson2010-01-121-36/+53
| | | | | | | | | | | | | | | | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77410 | mark.dickinson | 2010-01-10 13:06:31 +0000 (Sun, 10 Jan 2010) | 1 line Remove unused BCinfo fields and an unused macro. ........ r77421 | mark.dickinson | 2010-01-11 17:15:13 +0000 (Mon, 11 Jan 2010) | 1 line Change a variable type to avoid signed overflow; replace repeated '19999' constant by a define. ........ r77450 | mark.dickinson | 2010-01-12 22:23:56 +0000 (Tue, 12 Jan 2010) | 4 lines Issue #7632: Fix a problem with _Py_dg_strtod that could lead to crashes in debug builds, for certain long numeric strings corresponding to subnormal values. ........ r77451 | mark.dickinson | 2010-01-12 22:55:51 +0000 (Tue, 12 Jan 2010) | 2 lines Issue #7632: Fix a bug in dtoa.c that could lead to incorrectly-rounded results. ........
* Merged revisions 77302 via svnmerge fromMark Dickinson2010-01-041-1/+1
| | | | | | | | | | svn+ssh://pythondev@svn.python.org/python/trunk ........ r77302 | mark.dickinson | 2010-01-04 21:32:02 +0000 (Mon, 04 Jan 2010) | 1 line Fix typo in comment. ........
* Refactor to remove duplicated nan/inf parsing code inMark Dickinson2009-05-201-50/+0
| | | | pystrtod.c, floatobject.c and dtoa.c.
* Issue #5914: Add new C-API function PyOS_string_to_double, to complementMark Dickinson2009-05-031-0/+5
| | | | PyOS_double_to_string, and deprecate PyOS_ascii_strtod and PyOS_ascii_atof.
* Silence compiler warnings on VS8.0Mark Dickinson2009-04-171-6/+6
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* Add reminder to dtoa.c to check for updates regularly.Mark Dickinson2009-04-171-2/+10
| | | | Fix a bug in the memory management in dtoa.c.
* Issue #1580: use short float repr where possible.Mark Dickinson2009-04-161-0/+2646
- 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
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