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148 Commits

Author SHA1 Message Date
Benjamin Peterson
7d74b70e51 merge 3.2 2012-03-13 16:13:35 -05:00
Benjamin Peterson
2354a7593f fix indentation 2012-03-13 16:13:09 -05:00
Benjamin Peterson
ce79852077 use the static identifier api for looking up special methods 
I had to move the static identifier code from unicodeobject.h to object.h in
order for this to work.
 2012-01-22 11:24:29 -05:00
Victor Stinner
639418812f Use the new Py_ARRAY_LENGTH macro 2011-09-29 00:42:28 +02:00
Mark Dickinson
50203a69b3 Return +-Py_HUGE_VAL for tgamma(+-0) instead of risking FP exceptions by computing 1.0 / 0.0. 2011-09-25 15:26:43 +01:00
Victor Stinner
8f9f8d612a Issue #11888: Use system log2() when available 
I expect the system libc to use more accurate functions than Python. The GNU
libc uses for example FYL2X and FYL2XP1 hardware instructions on Intel FPU.
 2011-05-09 12:45:41 +02:00
Mark Dickinson
83b8c0be93 Grammatical fix for a comment for log2, to avoid referring to an *algorithm* as monotonic. 2011-05-09 08:40:20 +01:00
Mark Dickinson
23442584f4 Fix cut-and-paste typo in comment: log10 -> log2. 2011-05-09 08:05:00 +01:00
Victor Stinner
fa0e3d52d6 Issue #11888: Add log2 function to math module. Patch written by Mark 
Dickinson.
 2011-05-09 01:01:09 +02:00
Jesus Cea
736e7fc0f6 Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2 2011-03-14 17:36:54 +01:00
Mark Dickinson
c60371748b Issue #9599: Further accuracy tweaks to loghelper. For an integer n that's small enough to be converted to a float without overflow, log(n) is now computed as log(float(n)), and similarly for log10. 2010-09-29 19:06:36 +00:00
Mark Dickinson
fa41e60c9d Issue #9599: Tweak loghelper algorithm to return slightly improved results for powers of 2. 2010-09-28 07:22:27 +00:00
Mark Dickinson
226f544caa Improve docstrings for isnan, isinf and isfinite. 2010-07-11 18:13:41 +00:00
Mark Dickinson
8e0c996873 Issue #9165: Add math.isfinite and cmath.isfinite. 2010-07-11 17:38:24 +00:00
Ezio Melotti
9527afd02c Fix typo in a comment in mathmodule.c. 2010-07-08 15:03:02 +00:00
Mark Dickinson
be64d95169 Issue #9186: log1p(-1.0) should raise ValueError, not OverflowError. 2010-07-07 16:21:29 +00:00
Mark Dickinson
9c91eb844c Minor refactoring in lgamma code, for clarity. 2010-07-07 16:17:31 +00:00
Mark Dickinson
6d02d9cc6b Style/consistency nit: make math_floor and math_ceil code look the same. 2010-07-02 16:05:15 +00:00
Benjamin Peterson
f751bc9c01 fix lookup of __ceil__ 2010-07-02 13:46:42 +00:00
Benjamin Peterson
b0125892e6 account for different ref counting semantics of _PyObject_LookupSpecial 2010-07-02 13:35:17 +00:00
Benjamin Peterson
8bb9cde6c0 correctly lookup __trunc__ and __floor__ 2010-07-01 15:16:55 +00:00
Mark Dickinson
fdb0accc31 Merged revisions 82221 via svnmerge from 
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r82221 | mark.dickinson | 2010-06-25 21:19:48 +0100 (Fri, 25 Jun 2010) | 1 line

  Fix indentation of Python code example in C comment.
........
 2010-06-25 20:22:24 +00:00
Mark Dickinson
bcdf9da265 Merged revisions 81967 via svnmerge from 
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81967 | mark.dickinson | 2010-06-13 11:50:29 +0100 (Sun, 13 Jun 2010) | 4 lines

  Issue #8986: erfc was raising OverflowError on Linux for arguments in
  the (approximate) range (-27.3, 30.0), as a result of an escaped errno
  value.
........
 2010-06-13 10:52:38 +00:00
Mark Dickinson
4c8a9a2df3 Issue #8692: Improve performance of math.factorial: 
(1) use a different algorithm that roughly halves the total number of
    multiplications required and results in more balanced multiplications
(2) use a lookup table for small arguments
(3) fast accumulation of products in C integer arithmetic rather than
    PyLong arithmetic when possible.

Typical speedup, from unscientific testing on a 64-bit laptop, is 4.5x
to 6.5x for arguments in the range 100 - 10000.

Patch by Daniel Stutzbach; extensive reviews by Alexander Belopolsky.
 2010-05-15 17:02:38 +00:00
Antoine Pitrou
f95a1b3c53 Recorded merge of revisions 81029 via svnmerge from 
svn+ssh://pythondev@svn.python.org/python/trunk

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

  Untabify C files. Will watch buildbots.
........
 2010-05-09 15:52:27 +00:00