cpython

Commit Graph

Author	SHA1	Message	Date
Stefan Krah	9d3a5aeabe	Defensive programming: mpd_isspecial(r) already implies mpd_isspecial(q), but this is more readable.	14 years ago
Stefan Krah	3c23a87e58	The divmod function for large numbers now has an ACL2 proof. Related changes: 1) Rename _mpd_qbarrett_divmod into _mpd_base_ndivmod: The function is only marginally related to either Barrett's algorithm or to the version in Hasselstrom's paper. 2) In places where the proof assumes exact operations, use new versions of add/sub/multiply that set NaN/Invalid_operation if this condition is not met. According to the proof this cannot happen, so this should be regarded as an extra safety net. 3) Raise Division_impossible for operands with a number of digits greater than MPD_MAX_PREC. This facilitates the audit of the function and can practically only occur in the 32-bit version under conditions where a MemoryError is already imminent. 4) Use _mpd_qmul() in places where the result can exceed MPD_MAX_PREC in a well defined manner. 5) Test for mpd_isspecial(qq) in a place where the addition of one can theoretically trigger a Malloc_error. 6) Remove redundant code in _mpd_qdivmod(). 7) Add many comments.	14 years ago
Larry Hastings	6fe20b3aee	Issue #14127 : Add st_{cma}time_ns fields to os.stat() result object.	14 years ago
Martin v. Löwis	aa2efcb0bc	Issue #14098 : New functions PyErr_GetExcInfo and PyErr_SetExcInfo. Patch by Stefan Behnel.	14 years ago
Antoine Pitrou	23bba4ca39	Issue #11750 : The Windows API functions scattered in the _subprocess and _multiprocessing.win32 modules now live in a single module "_winapi". Patch by sbt.	14 years ago
Stefan Krah	c51b7fd65b	1) Simplify comment -- one has to read the complete proof (available in ACL2) in order to understand the algorithm anyway. 2) v->exp == -v->digits may be assumed. 3) Fix comment (v always shares data with a).	14 years ago
Stefan Krah	5d0d2e2b04	Explain the strategy to avoid huge alignment shifts in _mpd_qadd() in detail.	14 years ago
Stefan Krah	ed4b21ff4f	Cosmetic change: initialize digits to 1 (redundant).	14 years ago
Stefan Krah	bc771e9b19	Remove redundant finalization of the result.	14 years ago
Stefan Krah	aecaf0b663	Fix comments and whitespace.	14 years ago
Stefan Krah	6369f77d20	Support mythical ones' complement machines.	14 years ago
Stefan Krah	140893cbaa	The previous code is correct, but hard to verify: The libmpdec documentation rightfully states that an mpd_t with a coefficient flagged as MPD_CONST_DATA must not be in the position of the result operand. In this particular case several assumptions guarantee that a resize will never occur in all possible code paths, which was the reason for using MPD_CONST_DATA and saving an instruction by omitting the initialization of tmp.alloc. For readability, tmp is now flagged as MPD_STATIC_DATA and tmp.alloc is initialized.	14 years ago
Antoine Pitrou	a3f4457b17	Speed up reading of small files. This avoids multiple C read() calls on pyc files.	14 years ago
Brett Cannon	6f44d66bc4	Issue #13959 : Rename imp to _imp and add Lib/imp.py and begin rewriting functionality in pure Python. To start, imp.new_module() has been rewritten in pure Python, put into importlib (privately) and then publicly exposed in imp.	14 years ago
Mark Dickinson	a13b109bc0	Issue 13496: Fix bisect.bisect overflow bug for large collections.	14 years ago
Kristján Valur Jónsson	69c635266e	Issue #10576 : Add a progress callback to gcmodule	14 years ago
Victor Stinner	b8d016955a	Fix clock_gettime/getres/settime: PyArg_ParseTuple() expects an int Only use a single #ifdef for the 3 functions.	14 years ago
Stefan Krah	ec766a6179	1) Remove claim of an input invariant that is only true for static mpd_t. Resizing is used _inside_ libmpdec functions, and it is permitted to change x->alloc several times while setting x->len at the end of the function. Therefore, for dynamic mpd_t x->alloc can _temporarily_ drop below x->len. Of course the final result always has x->len <= x->alloc. For static mpd_t this cannot happen, since resizing to a smaller coefficient is a no-op. 2) Remove micro optimization in mpd_switch_to_dyn(): Previously only the valid initialized part of the existing coefficient up to x->len was copied to the new dynamic memory area. Now copying does the same as realloc() and the entire old memory area is copied. The rationale for this change is that it is no longer needed to memorize the explanation given in 1).	14 years ago
Stefan Krah	7b544ca08d	Fix stale comment.	14 years ago
Stefan Krah	cc74b6ab14	Issue #14478 : Cache the hash of a Decimal in the C version.	14 years ago
Stefan Krah	e37f8b29fc	Issue #14520 : Add __sizeof__() method to the Decimal object.	14 years ago
Stefan Krah	f69aef747a	Resize the coefficient to MPD_MINALLOC also if the requested size is below MPD_MINALLOC. Previously the resize was skipped as a micro optimization.	14 years ago
Stefan Krah	dd159ce606	Speed up _decimal by 30-40% for numerical workloads by improving the cache locality for regularly sized coefficients.	14 years ago
Stefan Krah	94ef3e4c1d	Use the MPD() accessor macro.	14 years ago
Kristján Valur Jónsson	e638513856	Remove unused variable from gcmodule.c. The code no longer tests for the presence of a __del__ attribute on objects, rather it uses the tp_del slot.	14 years ago
Brett Cannon	8798ad3e1e	struct timeval.tv_usec is 4 bytes on 64-bit OS X as it should be, but is defined as an int while everyone else expects a long regardless of length.	14 years ago
Stefan Krah	dc36efa368	1) Fix comment. 2) Assert that the source operand is not special. Prevent resulting assert failure (harmless) by initializing flags before calling mpd_qshiftr_inplace. 3) Save a couple of instructions (mpd_zerocoeff already sets digits and len). Reorder initialization to match the order in the mpd_t struct.	14 years ago
Kristján Valur Jónsson	10f383a937	Issue #14310 : inter-process socket duplication for windows	14 years ago
Ross Lagerwall	0f9eec19ee	Don't Py_DECREF NULL variable in io.IncrementalNewlineDecoder. Found with Clang's Static Analyzer.	14 years ago
Stefan Krah	4771cca817	Whitespace.	14 years ago
Stefan Krah	871b96bd5a	Reduce array size.	14 years ago
Stefan Krah	a6169484c2	Formatting.	14 years ago
Stefan Krah	ff3eca0cc3	Allow printing a leading '-' and the maximum number of exponent digits rather than raising RuntimeError (allocated space is sufficient for the additional character).	14 years ago
Stefan Krah	0774e9b9f5	Raise InvalidOperation if exponents of zeros are clamped during exact conversion in the Decimal constructor. Exact here refers to the representation and not to the value (clamping does not change the value).	14 years ago
Eli Bendersky	828efdea56	Replace bootstrap imports with real C API calls.	14 years ago
Antoine Pitrou	a701388de1	Rename _PyIter_GetBuiltin to _PyObject_GetBuiltin, and do not include it in the stable ABI.	14 years ago
Eli Bendersky	08b852970e	Fix Windows compilation errors	14 years ago
Eli Bendersky	ebf37a2ffb	Fixes and enhancements to _elementtree: * Fixed refleak problems when GC collection is run (see messages in issue #14065) * Added weakref support to Element objects	14 years ago
Kristján Valur Jónsson	31668b8f7a	Issue #14288 : Serialization support for builtin iterators.	14 years ago
Victor Stinner	30d79471bb	Expose clock_settime() as time.clock_settime()	14 years ago
Victor Stinner	1470f35bc6	Add time.CLOCK_HIGHRES constant, needed on Solaris	14 years ago
Stefan Krah	91c0274bc4	Improve comments.	14 years ago
Benjamin Peterson	e900096dc4	prevent writing to stderr from messing up the exception state (closes #14474 )	14 years ago
Stefan Krah	5100171d81	Clear the context flags if a context is initialized from the DefaultContext.	14 years ago
Stefan Krah	41e031004b	Fix Overflow exception in the bignum factorial benchmark that is due to the recent change of the default value for context.Emax.	14 years ago
Antoine Pitrou	9a54a260de	Issue #14300 : Under Windows, sockets created using socket.dup() now allow overlapped I/O. Patch by sbt.	14 years ago
Antoine Pitrou	6211b88161	Issue #14437 : Fix building the _io module under Cygwin.	14 years ago
Andrew Svetlov	9e892bbf28	fix issue #5136 : deprecate old unused functions from tkinter. These functions are not documnted, so no documentation update.	14 years ago
Kristján Valur Jónsson	310052c1f0	Fix warning when compiling socketmodule.c with VS2010 VS2010 defineds the old errno constants in addition to the WSA* ones.	14 years ago
Eli Bendersky	0192ba33b4	Issue #14065 : Added cyclic GC support to ET.Element	14 years ago

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6543 Commits (cf649958f72efbe2d68ffcfcb0a01ce53ff69f88)