Commit Graph

29 Commits

Author SHA1 Message Date
Sebastian Berg 7a3b03509e
gh-104263: Rely on Py_NAN and introduce Py_INFINITY (GH-104202)
This PR removes `_Py_dg_stdnan` and `_Py_dg_infinity` in favour of
using the standard `NAN` and `INFINITY` macros provided by C99.
This change has the side-effect of fixing a bug on MIPS where the
hard-coded value used by `_Py_dg_stdnan` gave a signalling NaN
rather than a quiet NaN.
---------

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2023-05-10 17:44:52 +01:00
Victor Stinner 1b2611eb02
bpo-46656: Remove Py_NO_NAN macro (GH-31160)
Building Python now requires support for floating point Not-a-Number
(NaN): remove the Py_NO_NAN macro.
2022-02-25 01:32:57 +01:00
Victor Stinner 54842e4311
bpo-46640: Py_NAN now uses the C99 NAN constant (GH-31134)
Building Python now requires a C99 <math.h> header file providing a
NAN constant, or the __builtin_nan() built-in function. If a platform
does not support Not-a-Number (NaN), the Py_NO_NAN macro can be
defined in the pyconfig.h file.
2022-02-06 13:13:04 +01:00
Victor Stinner 194a9526d8
bpo-45440: Require math.h isinf() to build (GH-28894)
Building Python now requires a C99 <math.h> header file providing
isinf(), isnan() and isfinite() functions.

Remove the Py_FORCE_DOUBLE() macro. It was used by the
Py_IS_INFINITY() macro.

Changes:

* Remove Py_IS_NAN(), Py_IS_INFINITY() and Py_IS_FINITE()
  in PC/pyconfig.h.
* Remove the _Py_force_double() function.
* configure no longer checks if math.h defines isinf(), isnan() and
  isfinite().
2021-10-13 23:27:50 +02:00
Victor Stinner 61190e092b
bpo-45412: Move copysign() define to pycore_pymath.h (GH-28889)
Move definitions of copysign(), round(), hypot(), fmod(), etc. from
pymath.h to pycore_pymath.h. These functions are not exported by
libpython and so must not be part of the C API.
2021-10-12 00:12:00 +02:00
Victor Stinner 7103356455
bpo-45412: Move _Py_SET_53BIT_PRECISION_START to pycore_pymath.h (GH-28882)
Move the following macros , to pycore_pymath.h (internal C API):

* _Py_SET_53BIT_PRECISION_HEADER
* _Py_SET_53BIT_PRECISION_START
* _Py_SET_53BIT_PRECISION_END

PEP 7: add braces to if and "do { ... } while (0)" in these macros.

Move also _Py_get_387controlword() and _Py_set_387controlword()
definitions to pycore_pymath.h. These functions are no longer
exported.

pystrtod.c now includes pycore_pymath.h.
2021-10-11 23:09:40 +02:00
Victor Stinner 2f92e2a590
bpo-45412: Remove Py_SET_ERRNO_ON_MATH_ERROR() macro (GH-28820)
Remove the following math macros using the errno variable:

* Py_ADJUST_ERANGE1()
* Py_ADJUST_ERANGE2()
* Py_OVERFLOWED()
* Py_SET_ERANGE_IF_OVERFLOW()
* Py_SET_ERRNO_ON_MATH_ERROR()

Create pycore_pymath.h internal header file.

Rename Py_ADJUST_ERANGE1() and Py_ADJUST_ERANGE2() to
_Py_ADJUST_ERANGE1() and _Py_ADJUST_ERANGE2(), and convert these
macros to static inline functions.

Move the following macros to pycore_pymath.h:

* _Py_IntegralTypeSigned()
* _Py_IntegralTypeMax()
* _Py_IntegralTypeMin()
* _Py_InIntegralTypeRange()
2021-10-11 21:00:25 +02:00
Victor Stinner 7974c30b9f
bpo-45094: Add Py_NO_INLINE macro (GH-28140)
* Rename _Py_NO_INLINE macro to Py_NO_INLINE: make it public and
  document it.
* Sort macros in the C API documentation.
2021-09-03 16:44:02 +02:00
Niklas Fiekas 794e7d1ab2
bpo-29782: Consolidate _Py_Bit_Length() (GH-20739)
In GH-2866, _Py_Bit_Length() was added to pymath.h for lack of a better
location. GH-20518 added a more appropriate header file for bit utilities. It
also shows how to properly use intrinsics. This allows reconsidering bpo-29782.

* Move the function to the new header.
* Changed return type to match __builtin_clzl() and reviewed usage.
* Use intrinsics where available.
* Pick a fallback implementation suitable for inlining.
2020-06-15 14:33:48 +02:00
Niklas Fiekas c5b79003f5 bpo-31031: Unify duplicate bits_in_digit and bit_length (GH-2866)
Add _Py_bit_length() to unify duplicate bits_in_digit() and bit_length().
2020-01-16 15:09:19 +01:00
Min ho Kim c4cacc8c5e Fix typos in comments, docs and test names (#15018)
* Fix typos in comments, docs and test names

* Update test_pyparse.py

account for change in string length

* Apply suggestion: splitable -> splittable

Co-Authored-By: Terry Jan Reedy <tjreedy@udel.edu>

* Apply suggestion: splitable -> splittable

Co-Authored-By: Terry Jan Reedy <tjreedy@udel.edu>

* Apply suggestion: Dealloccte -> Deallocate

Co-Authored-By: Terry Jan Reedy <tjreedy@udel.edu>

* Update posixmodule checksum.

* Reverse idlelib changes.
2019-07-30 18:16:13 -04:00
Benjamin Peterson a853a8ba78 bpo-31373: fix undefined floating-point demotions (#3396) 2017-09-07 11:13:59 -07:00
Raymond Hettinger 15f44ab043 Issue #27895: Spelling fixes (Contributed by Ville Skyttä). 2016-08-30 10:47:49 -07:00
Guido van Rossum 0a891d70de Issue #12345: Add mathemathcal constant tau to math and cmath.
Patch by Lisa Roach. See also PEP 628.
2016-08-15 09:12:52 -07:00
Serhiy Storchaka 2d06e84455 Issue #25923: Added the const qualifier to static constant arrays. 2015-12-25 19:53:18 +02:00
R David Murray edbc28ce81 #21167: Fix definition of NAN when ICC used without -fp-model strict.
Patch from Chris Hogan of Intel, reviewed by Mark Dickinson.
2015-08-13 09:58:07 -04:00
Jesus Cea 736e7fc0f6 Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2 2011-03-14 17:36:54 +01:00
Martin v. Löwis 4d0d471a80 Merge branches/pep-0384. 2010-12-03 20:14:31 +00:00
Mark Dickinson f371859a4f Merged revisions 76978 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  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.
........
2009-12-21 15:27:41 +00:00
Mark Dickinson e9eb7b6581 Merged revisions 73660 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r73660 | mark.dickinson | 2009-06-28 23:37:13 +0100 (Sun, 28 Jun 2009) | 1 line

  Remove unused stdint.h includes
........
2009-06-28 22:40:48 +00:00
Mark Dickinson f253786a80 Add check for C99 round function to configure, and define
a fallback function if round doesn't exist.
2009-04-18 13:58:18 +00:00
Mark Dickinson b08a53a99d 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
2009-04-16 19:52:09 +00:00
Mark Dickinson 87ec0855c6 Merged revisions 69459 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  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.
........
2009-02-09 17:15:59 +00:00
Mark Dickinson 52144f5782 Merged revisions 68311 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68311 | mark.dickinson | 2009-01-04 19:53:00 +0000 (Sun, 04 Jan 2009) | 2 lines

  Use C99 'isfinite' macro in preference to BSD-derived 'finite' function.
........
2009-01-05 17:08:27 +00:00
Mark Dickinson 6cb2bddb85 Merged revisions 68304 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68304 | mark.dickinson | 2009-01-04 17:02:05 +0000 (Sun, 04 Jan 2009) | 2 lines

  Fix HAVE_DECL_ISINF/ISNAN test (again).
........
2009-01-04 17:02:56 +00:00
Mark Dickinson 7894a7255f Merged revisions 68302 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68302 | mark.dickinson | 2009-01-04 16:06:40 +0000 (Sun, 04 Jan 2009) | 4 lines

  Oops.  Need to check not only that HAVE_DECL_ISINF is defined, but also
  that it's equal to 1.  (If isinf isn't defined, HAVE_DECL_ISINF is
  defined to be 0, rather than being undefined.)
........
2009-01-04 16:41:08 +00:00
Mark Dickinson 3dc7c6a375 Merged revisions 68296,68299 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r68296 | mark.dickinson | 2009-01-04 12:29:36 +0000 (Sun, 04 Jan 2009) | 6 lines

  Add autoconf test to detect x87-style double rounding, as described in
  issue #2937.  This information can be helpful for diagnosing platform-
  specific problems in math and cmath.  The result of the test also
  serves as a fairly reliable indicator of whether the x87 floating-point
  instructions (as opposed to SSE2) are in use on Intel x86/x86_64 systems.
........
  r68299 | mark.dickinson | 2009-01-04 13:57:26 +0000 (Sun, 04 Jan 2009) | 4 lines

  isinf and isnan are macros, not functions; fix configure script
  to use AC_CHECK_DECLS instead of AC_CHECK_FUNCS for these.
  (See discussion in issue #4506)
........
2009-01-04 15:09:02 +00:00
Benjamin Peterson 4aeec04624 Merged revisions 65658,65869,65882 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

................
  r65658 | bill.janssen | 2008-08-12 12:09:57 -0500 (Tue, 12 Aug 2008) | 1 line

  update ssl documentation
................
  r65869 | benjamin.peterson | 2008-08-19 14:27:53 -0500 (Tue, 19 Aug 2008) | 1 line

  fix a little typo
................
  r65882 | benjamin.peterson | 2008-08-19 16:07:15 -0500 (Tue, 19 Aug 2008) | 9 lines

  Merged revisions 65876 via svnmerge from
  svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

  ........
    r65876 | benjamin.peterson | 2008-08-19 15:54:52 -0500 (Tue, 19 Aug 2008) | 1 line

    apply a fix I think will help Windows
  ........
................
2008-08-19 21:42:13 +00:00
Christian Heimes 53876d9cd8 Merged revisions 62380,62382-62383 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  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 :)
........
  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
........
  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 ...
........
2008-04-19 00:31:39 +00:00