Mark Dickinson
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
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.
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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
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
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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
Mark Dickinson
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
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
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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
Mark Dickinson
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
Mark Dickinson
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
Mark Dickinson
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
Mark Dickinson
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
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.
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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
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
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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
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)
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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
Jeffrey Yasskin
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
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
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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
