ff3fdce0d2
Replace math.sum with math.fsum in a couple of comments
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that were missed by r65308
2008-07-30 16:25:16 +00:00
fef6b13c32
Rename math.sum to math.fsum
2008-07-30 16:20:10 +00:00
abe0aee3cf
Fix special-value handling for math.sum.
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Also minor cleanups to the code: fix tabbing, remove
trailing whitespace, and reformat to fit into 80
columns.
2008-07-30 12:01:41 +00:00
2fcd8c9703
Fix another typo in math_sum comment
2008-06-20 15:26:19 +00:00
5f198bee4e
Fix comment typos
2008-06-20 02:11:42 +00:00
2281da42b0
Fix double decref.
2008-06-18 00:56:57 +00:00
fb1c4b98e9
Issue 3118: make test_math pass on Ubuntu/ia64. exp(-745.0) was raising
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OverflowError incorrectly on this platform, presumably as a result of
the libm setting errno = ERANGE for this call.
2008-06-17 21:16:55 +00:00
d623414141
Unhappy buildbots. Revert 64052. Long doubles have unexpected effects on some builds.
2008-06-09 11:24:47 +00:00
7b1ed66372
Address double-rounding scenarios by setting all variables to long doubles.
2008-06-09 09:29:17 +00:00
ecbdd2e9b0
Issue #2138 : Add math.factorial().
2008-06-09 06:54:45 +00:00
ef712d6fd3
* Mark intermedidate computes values (hi, lo, yr) as volatile.
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* 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
2a9179ac73
Fix two typos.
2008-05-29 08:38:23 +00:00
778d5cc4fb
Tweak the comments and formatting.
2008-05-23 04:32:43 +00:00
99dfe92759
Issue #2819 : Add math.sum, a function that sums a sequence of floats
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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
f8476c1573
Issue #2487 . math.ldexp(x, n) raised OverflowError when n was large and
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negative; fix to return an (appropriately signed) zero instead.
2008-05-09 17:54:23 +00:00
0da94c8a34
Silence 'r may be used uninitialized' compiler warning.
2008-04-21 01:55:50 +00:00
92483cd8da
math.atan2 is misbehaving on Windows; this patch
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should fix the problem in the same way that
the cmath.phase problems were fixed.
2008-04-20 21:39:04 +00:00
cec3f138d8
Yet more explicit special case handling to make
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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
b2f7090239
FreeBSD doesn't follow C99 for modf(inf); so add explicit
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special-value handling to math.modf code.
2008-04-20 01:39:24 +00:00
a1293eb65f
Additional special-case handling for math.pow.
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Windows/VS2008 doesn't like (-1)**(+-inf).
2008-04-19 19:41:52 +00:00
e941d97d12
Additional tests for math.pow, and extra special-case
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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
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.
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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
fe424f754f
Neaten-up a bit.
2008-02-02 05:24:44 +00:00
ca2b69f765
Move __builtins__.trunc() to math.trunc() per
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http://mail.python.org/pipermail/python-dev/2008-January/076626.html and issue
1965.
2008-02-01 06:22:46 +00:00
543cabc842
setup.py doesn't pick up changes to a header file
2008-01-25 14:54:23 +00:00
5f95a79b2b
Add prototypes to get the mathmodule.c to compile on OSF1 5.1 (Tru64)
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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
9871d8fe22
Continue rolling back pep-3141 changes that changed behavior from 2.5. This
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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
66ecda4990
Fixed math.copysign() on Windows
2008-01-04 01:48:50 +00:00
eebb79cc69
Added copysign(x, y) function to the math module
2008-01-03 22:32:26 +00:00
e2ca4245c9
Added math.isinf() and math.isnan()
2008-01-03 20:23:15 +00:00
2f3c16be73
Backport PEP 3141 from the py3k branch to the trunk. This includes r50877 (just
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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
45e230a8e1
Speed up function calls into the math module by using METH_O.
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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
a355c14fa1
Whoops.
2006-05-29 22:00:30 +00:00
bf92f46572
Convert more modules to METH_VARARGS.
2006-05-29 21:58:42 +00:00
1ac754fa10
Check return result from Py_InitModule*(). This API can fail.
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Probably should be backported.
2006-01-19 06:09:39 +00:00
9ef852c6c2
Make that a C, not a C++, comment.
2005-04-06 13:05:18 +00:00
2ea3072805
Add a comment explaining the import of longintrepr.h.
2005-04-06 11:27:40 +00:00
77d9a3effa
Patch #871657 : Set EDOM for `nan' return values on FreeBSD and OpenBSD.
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This fixes a problem that math.sqrt(-1) doesn't raise math.error.
2004-03-22 08:43:55 +00:00
fb2765666f
Getting rid of support for the ancient Apple MPW compiler.
2003-11-19 15:24:47 +00:00
8ae4689657
Simplify and speedup uses of Py_BuildValue():
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* 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
ea3fdf44a2
SF patch #659536 : Use PyArg_UnpackTuple where possible.
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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
866964c3a3
Apply SF patch 652930: Add optional base argument to math.log(x[, base]).
2002-12-14 19:51:34 +00:00
fe51c6d66e
Excise DL_EXPORT/DL_IMPORT from Modules/*. Required adding a prototype
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for Py_Main().
Thanks to Kalle Svensson and Skip Montanaro for the patches.
2002-08-02 02:27:13 +00:00
14f8b4cfcb
Patch #568124 : Add doc string macros.
2002-06-13 20:33:02 +00:00
d6f2267a83
Added degrees() and radians() to mathmodule. Closes patch 552452 and
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feature request 426539.
2002-05-13 03:56:10 +00:00
387c547fd3
Revert parts of patch #453627 , documenting the resulting test failures
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instead.
2001-09-06 08:16:17 +00:00
a40c793d06
Rework the way we try to check for libm overflow, given that C99 no longer
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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
655c9557f6
Patch #453627 : Define the following macros when compiling on a UnixWare 7.x system:
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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
e5ca6c71cd
loghelper(): Try to nudge the compiler into doing mults in an order that
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minimizes roundoff error.
2001-09-05 04:33:11 +00:00
785261684e
Return reasonable results for math.log(long) and math.log10(long) (we were
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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
Mark Dickinson
Andrew M. Kuchling
Raymond Hettinger
Christian Heimes
Jeffrey Yasskin
Neal Norwitz
Georg Brandl
Michael W. Hudson
Hye-Shik Chang
Jack Jansen
Mark Hammond
Martin v. Löwis
Tim Peters