Commit Graph

108 Commits

Author SHA1 Message Date
Raymond Hettinger d623414141 Unhappy buildbots. Revert 64052. Long doubles have unexpected effects on some builds. 2008-06-09 11:24:47 +00:00
Raymond Hettinger 7b1ed66372 Address double-rounding scenarios by setting all variables to long doubles. 2008-06-09 09:29:17 +00:00
Raymond Hettinger ecbdd2e9b0 Issue #2138: Add math.factorial(). 2008-06-09 06:54:45 +00:00
Raymond Hettinger ef712d6fd3 * Mark intermedidate computes values (hi, lo, yr) as volatile.
* Expand comments.
* Swap variable names in the sum_exact code so that x and y
  are consistently chosen as the larger and smaller magnitude
  values respectively.
2008-05-30 18:20:50 +00:00
Raymond Hettinger 2a9179ac73 Fix two typos. 2008-05-29 08:38:23 +00:00
Raymond Hettinger 778d5cc4fb Tweak the comments and formatting. 2008-05-23 04:32:43 +00:00
Mark Dickinson 99dfe92759 Issue #2819: Add math.sum, a function that sums a sequence of floats
efficiently but with no intermediate loss of precision.  Based on
Raymond Hettinger's ASPN recipe.  Thanks Jean Brouwers for the patch.
2008-05-23 01:35:30 +00:00
Mark Dickinson f8476c1573 Issue #2487. math.ldexp(x, n) raised OverflowError when n was large and
negative; fix to return an (appropriately signed) zero instead.
2008-05-09 17:54:23 +00:00
Mark Dickinson 0da94c8a34 Silence 'r may be used uninitialized' compiler warning. 2008-04-21 01:55:50 +00:00
Mark Dickinson 92483cd8da math.atan2 is misbehaving on Windows; this patch
should fix the problem in the same way that
the cmath.phase problems were fixed.
2008-04-20 21:39:04 +00:00
Mark Dickinson cec3f138d8 Yet more explicit special case handling to make
math.pow behave on alpha Tru64.  All IEEE 754
special values are now handled directly; only
the finite**finite case is handled by libm.
2008-04-20 04:13:13 +00:00
Mark Dickinson b2f7090239 FreeBSD doesn't follow C99 for modf(inf); so add explicit
special-value handling to math.modf code.
2008-04-20 01:39:24 +00:00
Mark Dickinson a1293eb65f Additional special-case handling for math.pow.
Windows/VS2008 doesn't like (-1)**(+-inf).
2008-04-19 19:41:52 +00:00
Mark Dickinson e941d97d12 Additional tests for math.pow, and extra special-case
handling code in math.pow, in the hope of making all
tests pass on the alpha Tru64 buildbot.
2008-04-19 18:51:48 +00:00
Christian Heimes 6f34109384 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 :)
2008-04-18 23:13:07 +00:00
Raymond Hettinger fe424f754f Neaten-up a bit. 2008-02-02 05:24:44 +00:00
Jeffrey Yasskin ca2b69f765 Move __builtins__.trunc() to math.trunc() per
http://mail.python.org/pipermail/python-dev/2008-January/076626.html and issue
1965.
2008-02-01 06:22:46 +00:00
Christian Heimes 543cabc842 setup.py doesn't pick up changes to a header file 2008-01-25 14:54:23 +00:00
Neal Norwitz 5f95a79b2b Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64)
and eliminate a compiler warning in floatobject.c.  There might be
a better way to go about this, but it should be good enough for now.
2008-01-25 08:04:16 +00:00
Jeffrey Yasskin 9871d8fe22 Continue rolling back pep-3141 changes that changed behavior from 2.5. This
round included:
 * Revert round to its 2.6 behavior (half away from 0).
 * Because round, floor, and ceil always return float again, it's no
   longer necessary to have them delegate to __xxx___, so I've ripped
   that out of their implementations and the Real ABC. This also helps
   in implementing types that work in both 2.6 and 3.0: you return int
   from the __xxx__ methods, and let it get enabled by the version
   upgrade.
 * Make pow(-1, .5) raise a ValueError again.
2008-01-05 08:47:13 +00:00
Christian Heimes 66ecda4990 Fixed math.copysign() on Windows 2008-01-04 01:48:50 +00:00
Christian Heimes eebb79cc69 Added copysign(x, y) function to the math module 2008-01-03 22:32:26 +00:00
Christian Heimes e2ca4245c9 Added math.isinf() and math.isnan() 2008-01-03 20:23:15 +00:00
Jeffrey Yasskin 2f3c16be73 Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just
the complex_pow part), r56649, r56652, r56715, r57296, r57302, r57359, r57361,
r57372, r57738, r57739, r58017, r58039, r58040, and r59390, and new
documentation. The only significant difference is that round(x) returns a float
to preserve backward-compatibility. See http://bugs.python.org/issue1689.
2008-01-03 02:21:52 +00:00
Neal Norwitz 45e230a8e1 Speed up function calls into the math module by using METH_O.
There should be no functional changes. However, the error msgs are
slightly different.  Also verified that the module dict is not NULL on init.
2006-11-19 21:26:53 +00:00
Georg Brandl a355c14fa1 Whoops. 2006-05-29 22:00:30 +00:00
Georg Brandl bf92f46572 Convert more modules to METH_VARARGS. 2006-05-29 21:58:42 +00:00
Neal Norwitz 1ac754fa10 Check return result from Py_InitModule*(). This API can fail.
Probably should be backported.
2006-01-19 06:09:39 +00:00
Michael W. Hudson 9ef852c6c2 Make that a C, not a C++, comment. 2005-04-06 13:05:18 +00:00
Michael W. Hudson 2ea3072805 Add a comment explaining the import of longintrepr.h. 2005-04-06 11:27:40 +00:00
Hye-Shik Chang 77d9a3effa Patch #871657: Set EDOM for `nan' return values on FreeBSD and OpenBSD.
This fixes a problem that math.sqrt(-1) doesn't raise math.error.
2004-03-22 08:43:55 +00:00
Jack Jansen fb2765666f Getting rid of support for the ancient Apple MPW compiler. 2003-11-19 15:24:47 +00:00
Raymond Hettinger 8ae4689657 Simplify and speedup uses of Py_BuildValue():
* Py_BuildValue("(OOO)",a,b,c)  -->  PyTuple_Pack(3,a,b,c)
* Py_BuildValue("()",a)         -->  PyTuple_New(0)
* Py_BuildValue("O", a)         -->  Py_INCREF(a)
2003-10-12 19:09:37 +00:00
Raymond Hettinger ea3fdf44a2 SF patch #659536: Use PyArg_UnpackTuple where possible.
Obtain cleaner coding and a system wide
performance boost by using the fast, pre-parsed
PyArg_Unpack function instead of PyArg_ParseTuple
function which is driven by a format string.
2002-12-29 16:33:45 +00:00
Raymond Hettinger 866964c3a3 Apply SF patch 652930: Add optional base argument to math.log(x[, base]). 2002-12-14 19:51:34 +00:00
Mark Hammond fe51c6d66e Excise DL_EXPORT/DL_IMPORT from Modules/*. Required adding a prototype
for Py_Main().

Thanks to Kalle Svensson and Skip Montanaro for the patches.
2002-08-02 02:27:13 +00:00
Martin v. Löwis 14f8b4cfcb Patch #568124: Add doc string macros. 2002-06-13 20:33:02 +00:00
Raymond Hettinger d6f2267a83 Added degrees() and radians() to mathmodule. Closes patch 552452 and
feature request 426539.
2002-05-13 03:56:10 +00:00
Martin v. Löwis 387c547fd3 Revert parts of patch #453627, documenting the resulting test failures
instead.
2001-09-06 08:16:17 +00:00
Tim Peters a40c793d06 Rework the way we try to check for libm overflow, given that C99 no longer
requires that errno ever get set, and it looks like glibc is already
playing that game.  New rules:

+ Never use HUGE_VAL.  Use the new Py_HUGE_VAL instead.

+ Never believe errno.  If overflow is the only thing you're interested in,
  use the new Py_OVERFLOWED(x) macro.  If you're interested in any libm
  errors, use the new Py_SET_ERANGE_IF_OVERFLOW(x) macro, which attempts
  to set errno the way C89 said it worked.

Unfortunately, none of these are reliable, but they work on Windows and I
*expect* under glibc too.
2001-09-05 22:36:56 +00:00
Martin v. Löwis 655c9557f6 Patch #453627: Define the following macros when compiling on a UnixWare 7.x system:
SCO_ATAN2_BUG, SCO_ACCEPT_BUG, and STRICT_SYSV_CURSES.
Work aroudn a bug in the SCO UnixWare atan2() implementation.
2001-09-05 14:45:54 +00:00
Tim Peters e5ca6c71cd loghelper(): Try to nudge the compiler into doing mults in an order that
minimizes roundoff error.
2001-09-05 04:33:11 +00:00
Tim Peters 785261684e Return reasonable results for math.log(long) and math.log10(long) (we were
getting Infs, NaNs, or nonsense in 2.1 and before; in yesterday's CVS we
were getting OverflowError; but these functions always make good sense
for positive arguments, no matter how large).
2001-09-05 00:53:45 +00:00
Tim Peters 63c9453929 Mechanical fiddling to make this easier to work with in my editor.
Repaired the ldexp docstring (said the name of the func was "ldexp_doc").
2001-09-04 23:17:42 +00:00
Tim Peters fe71f81367 Part of SF patch [#431848] mathmodule.c: doc strings & conversion, from
Peter Schneider-Kamp.
Clarified some docstrings in the spirit of the patch; left out the
degrees() and radians() functions (see the patch comments on SF).
2001-08-07 22:10:00 +00:00
Peter Schneider-Kamp 07c1922b12 annoying whitespace inconsistency 2001-06-10 16:45:08 +00:00
Tim Peters 2bf405ad55 Repaired a comment and asserted a precondition. 2000-10-12 19:42:00 +00:00
Tim Peters 1d120619d4 Stop raising OverflowError on underflows reported by libm (errno==ERANGE and
libm result is 0).  Cautiously add a few libm exception test cases:
1. That exp(-huge) returns 0 without exception.
2. That exp(+huge) triggers OverflowError.
3. That sqrt(-1) raises ValueError specifically (apparently under glibc linked
   with -lieee, it was raising OverflowError due to an accident of the way
   mathmodule.c's CHECK() macro happened to deal with Infs and NaNs under gcc).
2000-10-12 06:10:25 +00:00
Tim Peters 78fc0b57df Fixed legit gripe from c.l.py that math.fmod docs aren't confusing enough.
FRED, please check my monkey-see-monkey-do Tex fiddling!
2000-09-16 03:54:24 +00:00
Guido van Rossum 8586991099 REMOVED all CWI, CNRI and BeOpen copyright markings.
This should match the situation in the 1.6b1 tree.
2000-09-01 23:29:29 +00:00