Commit Graph

5 Commits

Author SHA1 Message Date
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
Andrew MacIntyre
4561257c34 Merged revisions 66552-66553 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r66552 | andrew.macintyre | 2008-09-23 00:10:54 +1000 (Tue, 23 Sep 2008) | 5 lines

  should use macro'ed symbols not direct

  Part of source_os2emx.patch in issue 3868
  Reviewed by Amaury Forgeot d'Arc
........
  r66553 | andrew.macintyre | 2008-09-23 00:11:41 +1000 (Tue, 23 Sep 2008) | 5 lines

  any platform without HAVE_LOG1P should have DBL_EPSILON in <float.h>

  Part of source_os2emx.patch in issue 3868
  Reviewed by Amaury Forgeot d'Arc
........
2008-09-22 14:49:01 +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