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.
svn+ssh://pythondev@svn.python.org/python/trunk
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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.
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svn+ssh://pythondev@svn.python.org/python/trunk
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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.
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svn+ssh://pythondev@svn.python.org/python/trunk
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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.
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(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.
svn+ssh://pythondev@svn.python.org/python/trunk
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r75952 | georg.brandl | 2009-10-29 21:38:32 +0100 (Do, 29 Okt 2009) | 1 line
Use the correct function name in docstring.
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r75953 | georg.brandl | 2009-10-29 21:39:50 +0100 (Do, 29 Okt 2009) | 1 line
Remove mention of the old -X command line switch.
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r75955 | georg.brandl | 2009-10-29 21:54:03 +0100 (Do, 29 Okt 2009) | 1 line
Use a single style for all the docstrings in the math module.
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r76105 | georg.brandl | 2009-11-04 08:38:12 +0100 (Mi, 04 Nov 2009) | 1 line
#7259: show correct equivalent for operator.i* operations in docstring; fix minor issues in operator docs.
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r76143 | georg.brandl | 2009-11-07 09:26:07 +0100 (Sa, 07 Nov 2009) | 1 line
#7271: fix typo.
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r76223 | georg.brandl | 2009-11-12 09:29:46 +0100 (Do, 12 Nov 2009) | 1 line
Give the profile module a module directive.
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r76259 | georg.brandl | 2009-11-14 12:50:51 +0100 (Sa, 14 Nov 2009) | 1 line
Fix terminology.
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r76326 | georg.brandl | 2009-11-16 17:44:05 +0100 (Mo, 16 Nov 2009) | 1 line
#7302: fix link.
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r76376 | georg.brandl | 2009-11-18 20:39:14 +0100 (Mi, 18 Nov 2009) | 1 line
upcase Python
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r76377 | georg.brandl | 2009-11-18 21:05:15 +0100 (Mi, 18 Nov 2009) | 1 line
Fix markup.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r77275 | mark.dickinson | 2010-01-03 12:03:03 +0000 (Sun, 03 Jan 2010) | 1 line
Make use of PyLong_AsLongAndOverflow in math_ldexp.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r77234 | mark.dickinson | 2010-01-02 14:45:40 +0000 (Sat, 02 Jan 2010) | 7 lines
Refactor some longobject internals: PyLong_AsDouble and _PyLong_AsScaledDouble
(the latter renamed to _PyLong_Frexp) now use the same core code. The
exponent produced by _PyLong_Frexp now has type Py_ssize_t instead of the
previously used int, and no longer needs scaling by PyLong_SHIFT. This
frees the math module from having to know anything about the PyLong
implementation. This closes issue #5576.
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(the latter renamed to _PyLong_Frexp) now use the same core code. The
exponent produced by _PyLong_Frexp now has type Py_ssize_t instead of the
previously used int, and no longer needs scaling by PyLong_SHIFT. This
frees the math module from having to know anything about the PyLong
implementation. This closes issue #5576.
svn+ssh://pythondev@svn.python.org/python/trunk
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r76916 | mark.dickinson | 2009-12-20 13:58:18 +0000 (Sun, 20 Dec 2009) | 3 lines
math.factorial depends on PyLong_AsLong correctly converting floats; rewrite
it to do the conversion explicitly instead. See issue #7550.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r76878 | mark.dickinson | 2009-12-19 11:07:23 +0000 (Sat, 19 Dec 2009) | 3 lines
Issue #3366: Add error function and complementary error function to
math module.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r76861 | mark.dickinson | 2009-12-16 20:13:40 +0000 (Wed, 16 Dec 2009) | 3 lines
Issue #3366: Add expm1 function to math module. Thanks Eric Smith for
testing on Windows.
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Serhiy Storchaka
Mark Dickinson
Andrew Kuchling
Mark Dickinson
Benjamin Peterson
Victor Stinner
Jesus Cea
Ezio Melotti
Antoine Pitrou
Georg Brandl