74f49ab28b
Issue #15989 : Fix several occurrences of integer overflow
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when result of PyInt_AsLong() or PyLong_AsLong() narrowed
to int without checks.
This is a backport of changesets 13e2e44db99d and 525407d89277.
2013-01-19 12:55:39 +02:00
cf095f8e0f
Issue #16761 : Raise TypeError when int() or long() called with base argument only.
2012-12-28 09:31:59 +02:00
ad4b000179
Issue #14783 : Backport changes from 3.2.
2012-10-07 20:37:54 -07:00
c2077b0d9b
#11565 : Fix several typos. Patch by Piotr Kasprzyk.
2011-03-16 12:34:31 +02:00
24b07bcba3
#11515 : fix several typos. Patch by Piotr Kasprzyk.
2011-03-15 18:55:01 +02:00
43ca377e45
Wrap multiline macros in a 'do {} while(0)', for safety.
2010-05-09 20:42:09 +00:00
fda8d114ea
Post-detabification cleanup: whitespace fixes and long line rewraps only.
2010-05-09 20:30:29 +00:00
c83ea137d7
Untabify C files. Will watch buildbots.
2010-05-09 14:46:46 +00:00
22ff664ff7
Issue #8659 : Remove redundant ABS calls. Thanks Daniel Stutzbach.
2010-05-08 08:01:19 +00:00
ef7590e943
Issue #8328 : Silence Visual Studio warnings.
2010-04-07 08:24:44 +00:00
ea7e5510aa
Silence a 'comparison between signed and unsigned integer expressions' gcc warning.
2010-04-06 18:58:54 +00:00
3ec9b942b5
Issue #8259 : Get rid of 'outrageous left shift count' error when
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left-shifting an integer by more than 2**31 on a 64-bit machine. Also
convert shift counts to a Py_ssize_t instead of a C long.
2010-04-06 16:46:09 +00:00
a36507c64c
Issue #7767 : Add new C-API function PyLong_AsLongLongAndOverflow, a
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long long variant of PyLong_AsLongAndOverflow. Patch by Case Van
Horsen.
2010-01-30 10:08:33 +00:00
d3e323215c
Refactor some longobject internals: PyLong_AsDouble and _PyLong_AsScaledDouble
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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 .
2010-01-02 14:45:40 +00:00
4657283647
Issue #1811 : Improve accuracy and consistency of true division for integers.
2009-12-27 14:55:57 +00:00
e31d300664
Issue #7528 : Backport PyLong_AsLongAndOverflow from py3k to trunk.
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Thanks Case Van Horsen for the patch.
2009-12-21 11:21:25 +00:00
8d87dc0c29
Issue #1087418 : Small performance boost for bitwise operations on longs.
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Initial patch by Gregory Smith; some tweaks added.
2009-10-25 20:39:06 +00:00
71adc9328d
Style/consistency/nano-optimization nit: replace occurrences of
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(high_bits << PyLong_SHIFT) + low_bits with
(high_bits << PyLong_SHIFT) | low_bits
in Objects/longobject.c. Motivation:
- shouldn't unnecessarily mix bit ops with arithmetic ops (style)
- this pattern should be spelt the same way thoughout (consistency)
- it's very very very slightly faster: no need to worry about
carries to the high digit (nano-optimization).
2009-09-28 16:52:40 +00:00
40ee861c0a
Silence MSVC compiler warnings.
2009-09-21 16:16:44 +00:00
aa2adc828a
Issue #6713 : Improve performance of str(n) and repr(n) for integers n
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(up to 3.1 times faster in tests), by special-casing base 10 in
_PyLong_Format. (Backport of r74851 from py3k.)
2009-09-16 22:10:56 +00:00
1f4fc097f6
Fix potential signed-overflow bug in _PyLong_Format; also fix
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a couple of whitespace issues.
2009-09-13 11:56:13 +00:00
752a2daf32
Remove redundant assignment
2009-09-06 20:51:37 +00:00
d4b5c98fa6
Remove unnecessary use of context for long getters.
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(Related to issue #5880 ).
2009-05-02 17:55:01 +00:00
6736cf8d20
Issue #3166 : Make long -> float (and int -> float) conversions
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correctly rounded, using round-half-to-even. This ensures that the
value of float(n) doesn't depend on whether we're using 15-bit digits
or 30-bit digits for Python longs.
2009-04-20 21:13:33 +00:00
48e3fd240f
sys.long_info attributes should be ints, not longs
2009-04-02 18:39:37 +00:00
0b666bfdf9
Issue #5512 : speed up the long division algorithm for Python longs.
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The basic algorithm remains the same; the most significant speedups
come from the following three changes:
(1) normalize by shifting instead of multiplying and dividing
(2) the old algorithm usually did an unnecessary extra iteration of
the outer loop; remove this. As a special case, this means that
long divisions with a single-digit result run twice as fast as
before.
(3) make inner loop much tighter.
Various benchmarks show speedups of between 50% and 150% for long
integer divisions and modulo operations.
2009-03-23 18:25:13 +00:00
efc82f7e8e
Issue #4258 : Use 30-bit digits for Python longs, on 64-bit platforms.
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Backport of r70459.
2009-03-20 15:51:55 +00:00
b646487687
Replace long with twodigits, to avoid depending
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on sizeof(digit) < sizeof(long)
2009-02-25 20:29:50 +00:00
bcf6b18eb7
A few more minor fixes in longobject.c
2009-02-15 15:48:39 +00:00
2ffb26fb83
Issue #5260 : Various portability and standards compliance fixes, optimizations
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and cleanups in Objects/longobject.c. The most significant change is that
longs now use less memory: average savings are 2 bytes per long on 32-bit
systems and 6 bytes per long on 64-bit systems. (This memory saving already
exists in py3k.)
2009-02-15 10:13:41 +00:00
4015f62e39
Issue #5175 : PyLong_AsUnsignedLongLong now raises OverflowError for
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negative arguments. Previously, it raised TypeError.
Thanks Lisandro Dalcin.
2009-02-10 15:46:50 +00:00
a0eae0398c
Fix comment.
2009-01-26 21:40:08 +00:00
6ffa4a2a7d
Fix undefined behaviour (left shift of negative value) in long_hash. Also,
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rewrap a line of length > 79, and update comments.
2009-01-26 21:36:30 +00:00
1afe6ddd07
No need for carry to be type twodigits in _PyLong_AsByteArray; digit is large enough.
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This change should silence a compiler warning on Windows.
2009-01-25 22:12:31 +00:00
ff84aa87b4
Issue #4393 : fix 3 classes of potential portability problems in longobject.c:
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- fix some places where counters into ob_digit were declared as
int instead of Py_ssize_t
- add (twodigit) casts where necessary
- fix code in _PyLong_AsByteArray that uses << on negative values
2009-01-24 15:27:44 +00:00
1a707981c8
Issue #3439 : add bit_length method to int and long.
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Thanks Fredrik Johansson and Victor Stinner for code,
Raymond Hettinger for review.
2008-12-17 16:14:37 +00:00
b646757e01
Issue #1481296 : (again!) Make conversion of a float NaN to an int or
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long raise ValueError instead of returning 0. Also, change the error
message for conversion of an infinity to an integer, replacing 'long' by
'integer', so that it's appropriate for both long(float('inf')) and
int(float('inf')).
2008-08-04 21:30:09 +00:00
e7d8be80ba
Security patches from Apple: prevent int overflow when allocating memory
2008-07-31 17:17:14 +00:00
9be2ec109b
Added additional __sizeof__ implementations and addressed comments made in
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Issue3122.
2008-07-10 15:24:04 +00:00
9c437af4eb
Revert 64424, 64438, and 64439.
2008-06-24 22:46:07 +00:00
e3ae655edf
Make bin() implementation parallel oct() and hex() so that int/long subclasses can override or so that other classes can support.
2008-06-20 04:18:15 +00:00
dd96db63f6
This reverts r63675 based on the discussion in this thread:
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http://mail.python.org/pipermail/python-dev/2008-June/079988.html
Python 2.6 should stick with PyString_* in its codebase. The PyBytes_* names
in the spirit of 3.0 are available via a #define only. See the email thread.
2008-06-09 04:58:54 +00:00
7a6de8b0f4
Some style nits. Also clarify in the docstrings what __sizeof__ does.
2008-06-01 16:42:16 +00:00
51df064767
Issue #2898 : Added sys.getsizeof() to retrieve size of objects in bytes.
2008-06-01 16:16:17 +00:00
dc13b79a38
Refactor and clean up str.format() code (and helpers) in advance of optimizations.
2008-05-30 18:10:04 +00:00
593daf545b
Renamed PyString to PyBytes
2008-05-26 12:51:38 +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
27a632510e
Fix for possible signed overflow: the behaviour of -LONG_MIN is
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undefined in ANSI C.
2008-04-15 20:51:18 +00:00
d183bdd6fb
Revert r61969 which added casts to Py_CHARMASK to avoid compiler warnings.
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Rather than sprinkle casts throughout the code, change Py_CHARMASK to
always cast it's result to an unsigned char. This should ensure we
do the right thing when accessing an array with the result.
2008-03-28 04:58:51 +00:00
231346e23f
Fix warnings about using char as an array subscript. This is not portable
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since char is signed on some platforms and unsigned on others.
2008-03-27 04:40:50 +00:00
Serhiy Storchaka