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* gh-141004: soft-deprecate Py_INFINITY macro (#141033)Sergey B Kirpichev2025-11-121-10/+10
| | | Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-120950: Fix overflow in math.log() with large int-like argument (GH-121011)Serhiy Storchaka2025-11-111-30/+50
| | | | | Handling of arbitrary large int-like argument is now consistent with handling arbitrary large int arguments.
* gh-81313: Add the math.integer module (PEP-791) (GH-133909)Serhiy Storchaka2025-10-311-1216/+27
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* gh-140443: Use `fma` in `loghelper` to improve accuracy of log for very ↵Abhishek Tiwari2025-10-231-1/+1
| | | | | | | | | | | | | | | | | | | large integers (#140469) * gh-140443:use fma in loghelper to improve accuracy of log for very large integers Use fused multiply-add in log_helper() for huge ints. Saving a rounding here is remarkably effective. Across some millions of randomized test cases with ints up to a billion bits, on Windows and using log10, the ULP error distribution was dramatically flattened, and its range was nearly cut in half. In fact, the largest error Tim saw was under 0.6 ULP. --------- Co-authored-by: abhi210 <27881020+Abhi210@users.noreply.github.com> Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
* Revert gh-139075. The sumprod fix needs more work. (gh-139092)Raymond Hettinger2025-09-181-14/+15
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* gh-139074: Fix missing high precision case in sumprod() (gh-139075)Raymond Hettinger2025-09-171-15/+14
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* GH-137623: Use an AC decorator for docstring line length enforcement (#137690)Adam Turner2025-08-181-3/+6
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* gh-135853: add `math.fmax` and `math.fmin` (#135888)Bénédikt Tran2025-07-121-0/+36
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* gh-135853: add `math.signbit` (#135877)Bénédikt Tran2025-06-281-0/+18
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* gh-135927: Fix MSVC Clatest C builds (GH-135935)Ken Jin2025-06-251-1/+1
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* gh-132908: Add math.isnormal/issubnormal() functions (GH132935)Sergey B Kirpichev2025-06-021-0/+40
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* gh-132876: workaround broken ldexp() on Windows 10 (#133135)Sergey B Kirpichev2025-05-261-0/+21
| | | | | | | | | * gh-132876: workaround broken ldexp() on Windows 10 ldexp() fails to round subnormal results before Windows 11, so hide their bug. Co-authored-by: Tim Peters <tim.peters@gmail.com>
* gh-133904: Fix `math.factorial` documentation (#133907)mkaraev2025-05-121-3/+1
| | | Co-authored-by: sobolevn <mail@sobolevn.me>
* gh-101410: Customize error messages for 1-arg math functions (#129497)Sergey B Kirpichev2025-04-221-17/+25
| | | | | | This also reverts loghelper() change in 75f59bb629 for integer input. The error message shouldn't include argument value here. Co-authored-by: Victor Stinner <vstinner@python.org>
* gh-101410: Revert loghelper() change in 75f59bb for integer input (GH-132625)Sergey B Kirpichev2025-04-171-2/+4
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* gh-131586: Avoid refcount contention in some "special" calls (#131588)Sam Gross2025-03-261-72/+22
| | | | | | | | | | In the free threaded build, the `_PyObject_LookupSpecial()` call can lead to reference count contention on the returned function object becuase it doesn't use stackrefs. Refactor some of the callers to use `_PyObject_MaybeCallSpecialNoArgs`, which uses stackrefs internally. This fixes the scaling bottleneck in the "lookup_special" microbenchmark in `ftscalingbench.py`. However, the are still some uses of `_PyObject_LookupSpecial()` that need to be addressed in future PRs.
* gh-101410: support custom messages for domain errors in the math module ↵Sergey B Kirpichev2025-01-231-29/+66
| | | | | | | | | | | (#124299) This adds basic support to override default messages for domain errors in the math_1() helper. The sqrt(), atanh(), log2(), log10() and log() functions were modified as examples. New macro supports gradual changing of error messages in other 1-arg functions. Co-authored-by: CharlieZhao <zhaoyu_hit@qq.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
* gh-122943: Rework support of var-positional parameter in Argument Clinic ↵Serhiy Storchaka2024-11-071-20/+23
| | | | | | | | | | | | | | | | | | (GH-122945) Move creation of a tuple for var-positional parameter out of _PyArg_UnpackKeywordsWithVararg(). Merge _PyArg_UnpackKeywordsWithVararg() with _PyArg_UnpackKeywords(). Add a new parameter in _PyArg_UnpackKeywords(). The "parameters" and "converters" attributes of ParseArgsCodeGen no longer contain the var-positional parameter. It is now available as the "varpos" attribute. Optimize code generation for var-positional parameter and reuse the same generating code for functions with and without keyword parameters. Add special converters for var-positional parameter. "tuple" represents it as a Python tuple and "array" represents it as a continuous array of PyObject*. "object" is a temporary alias of "tuple".
* gh-119793: Prefer `map(..., strict=True)` over starmap/zip in examples (#126407)Lukas Geiger2024-11-051-2/+2
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* gh-120026: soft deprecate Py_HUGE_VAL macro (#120027)Sergey B Kirpichev2024-11-011-7/+7
| | | Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
* gh-101123: Adapt vararg functions in the math module to Argument Clinic ↵Sergey B Kirpichev2024-10-311-36/+44
| | | | | | (#126235) This implicitly fixes the math.hypot signature, which was previously incomprehensible to inspect.signature().
* gh-123497: New limit for Python integers on 64-bit platforms (GH-123724)Serhiy Storchaka2024-09-291-13/+12
| | | | | | | | | | | Instead of be limited just by the size of addressable memory (2**63 bytes), Python integers are now also limited by the number of bits, so the number of bit now always fit in a 64-bit integer. Both limits are much larger than what might be available in practice, so it doesn't affect users. _PyLong_NumBits() and _PyLong_Frexp() are now always successful.
* gh-123836: workaround fmod(x, y) bug on Windows (#124171)Sergey B Kirpichev2024-09-171-0/+9
| | | | | | | | | | | | | | | | | | Buildbot failure on Windows 10 with MSC v.1916 64 bit (AMD64): FAIL: testFmod (test.test_math.MathTests.testFmod) ---------------------------------------------------------------------- Traceback (most recent call last): File "D:\buildarea\3.x.bolen-windows10\build\Lib\test\test_math.py", line 605, in testFmod self.ftest('fmod(-10, 1)', math.fmod(-10, 1), -0.0) ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "D:\buildarea\3.x.bolen-windows10\build\Lib\test\test_math.py", line 258, in ftest self.fail("{}: {}".format(name, failure)) ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ AssertionError: fmod(-10, 1): expected -0.0, got 0.0 (zero has wrong sign) Here Windows loose sign of the result; if y is nonzero, the result should have the same sign as x. This amends commit 28aea5d07d.
* gh-121485: Always use 64-bit integers for integers bits count (GH-121486)Serhiy Storchaka2024-08-301-4/+4
| | | | | Use 64-bit integers instead of platform specific size_t or Py_ssize_t to represent the number of bits in Python integer.
* gh-122681: remove m_atan2()/c_atan2() helpers (#122715)Sergey B Kirpichev2024-08-171-1/+1
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* gh-122681: merge m_atan2() and c_atan2() helper functions (#122682)Sergey B Kirpichev2024-08-061-37/+0
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* gh-121905: Consistently use "floating-point" instead of "floating point" ↵Serhiy Storchaka2024-07-191-7/+7
| | | | (GH-121907)
* gh-119613: Use C99+ functions instead of Py_IS_NAN/INFINITY/FINITE (#119619)Sergey B Kirpichev2024-05-291-70/+70
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* gh-118671: Updated dead ActiveState links (#118730)trag1c2024-05-081-1/+1
| | | | | Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>
* gh-116322: Add Py_mod_gil module slot (#116882)Brett Simmers2024-05-031-0/+1
| | | | | | | | | | | | | | This PR adds the ability to enable the GIL if it was disabled at interpreter startup, and modifies the multi-phase module initialization path to enable the GIL when loading a module, unless that module's spec includes a slot indicating it can run safely without the GIL. PEP 703 called the constant for the slot `Py_mod_gil_not_used`; I went with `Py_MOD_GIL_NOT_USED` for consistency with gh-104148. A warning will be issued up to once per interpreter for the first GIL-using module that is loaded. If `-v` is given, a shorter message will be printed to stderr every time a GIL-using module is loaded (including the first one that issues a warning).
* gh-73468: Add math.fma() function (#116667)Victor Stinner2024-03-171-0/+43
| | | | | | Added new math.fma() function, wrapping C99's ``fma()`` operation: fused multiply-add function. Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
* gh-111417: Remove unused code block in math.trunc() and round() (GH-111454)Jason Zhang2024-02-031-5/+0
| | | _PyObject_LookupSpecial() now ensures that the type is ready.
* gh-114569: Use PyMem_* APIs for most non-PyObject uses (#114574)Erlend E. Aasland2024-01-261-6/+6
| | | Fix usage in Modules, Objects, and Parser subdirectories.
* gh-111139: Optimize math.gcd(int, int) (#113887)Victor Stinner2024-01-101-5/+9
| | | | | | | | | | | | | Add a fast-path for the common case. Benchmark: python -m pyperf timeit \ -s 'import math; gcd=math.gcd; x=2*3; y=3*5' \ 'gcd(x,y)' Result: 1.07x faster (-3.4 ns) Mean +- std dev: 52.6 ns +- 4.0 ns -> 49.2 ns +- 0.4 ns: 1.07x faster
* gh-111342: fix typo in math.sumprod (GH-111416)Sergey B Kirpichev2023-10-281-1/+1
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* gh-110489: Optimise math.ceil for known exact float (#108801)Shantanu2023-10-061-7/+9
| | | | This matches a similar optimisation done for math.floor in https://github.com/python/cpython/pull/21072
* gh-102837: improve test coverage for math module (#102523)Sergey B Kirpichev2023-09-031-10/+7
| | | | | | | | - input checks for math_1(L989), math_1a(L1023), math_2(L1064,L1071), hypot(L2682), log(L2307), ldexp(L2168), ceil(L1165), floor(L1236,L1239) and dist(L2587,L2588,L2628). - drop inaccessible "if" branch (L3518) in perm_comb_small() - improve fsum coverage for exceptional cases (L1433,L1438,L1451,L1497), ditto fmod(L2378) - rewrite modf to fix inaccessible case(L2229), ditto for pow(L2988) (all line numbers are wrt the main branch at 5e6661bce9)
* gh-106320: Remove private AC converter functions (#108505)Victor Stinner2023-08-261-0/+1
| | | | | | | | | | | | | | Move these private functions to the internal C API (pycore_abstract.h): * _Py_convert_optional_to_ssize_t() * _PyNumber_Index() Argument Clinic now emits #include "pycore_abstract.h" when these functions are used. The parser of the c-analyzer tool now uses a list of files which use the limited C API, rather than a list of files using the internal C API.
* gh-86493: Fix possible leaks in some modules initialization (GH-106768)Serhiy Storchaka2023-07-181-5/+5
| | | | Fix _ssl, _stat, _testinternalcapi, _threadmodule, cmath, math, posix, time.
* gh-94673: Ensure subtypes are readied only once in math.trunc() (gh-105465)neonene2023-06-071-1/+1
| | | Fixes a typo in d2e2e53.
* gh-94906: Support multiple steps in math.nextafter (#103881)Matthias Görgens2023-05-191-4/+105
| | | | | | | This PR updates `math.nextafter` to add a new `steps` argument. The behaviour is as though `math.nextafter` had been called `steps` times in succession. --------- Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
* gh-104263: Rely on Py_NAN and introduce Py_INFINITY (GH-104202)Sebastian Berg2023-05-101-35/+4
| | | | | | | | | | This PR removes `_Py_dg_stdnan` and `_Py_dg_infinity` in favour of using the standard `NAN` and `INFINITY` macros provided by C99. This change has the side-effect of fixing a bug on MIPS where the hard-coded value used by `_Py_dg_stdnan` gave a signalling NaN rather than a quiet NaN. --------- Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* gh-99113: Add Py_MOD_PER_INTERPRETER_GIL_SUPPORTED (gh-104205)Eric Snow2023-05-051-0/+1
| | | Here we are doing no more than adding the value for Py_mod_multiple_interpreters and using it for stdlib modules. We will start checking for it in gh-104206 (once PyInterpreterState.ceval.own_gil is added in gh-104204).
* Fix typo in math.log docstring (#103943)Wes Turner2023-04-281-1/+1
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* gh-94673: Ensure Builtin Static Types are Readied Properly (gh-103940)Eric Snow2023-04-271-1/+1
| | | There were cases where we do unnecessary work for builtin static types. This also simplifies some work necessary for a per-interpreter GIL.
* GH-101291: Rearrange the size bits in PyLongObject (GH-102464)Mark Shannon2023-03-221-9/+10
| | | | | | | | | | * Eliminate all remaining uses of Py_SIZE and Py_SET_SIZE on PyLongObject, adding asserts. * Change layout of size/sign bits in longobject to support future addition of immortal ints and tagged medium ints. * Add functions to hide some internals of long object, and for setting sign and digit count. * Replace uses of IS_MEDIUM_VALUE macro with _PyLong_IsCompact().
* gh-102839: remove AC for math.log (GH-102863)Sergey B Kirpichev2023-03-211-21/+14
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* Add more comments to hypot() (GH-102817)Raymond Hettinger2023-03-181-18/+12
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* Simplify and improve accuracy for subnormals in hypot() (GH-102785)Raymond Hettinger2023-03-171-35/+28
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* Simplify and speed-up math.hypot() and math.dist() (GH-102734)Raymond Hettinger2023-03-151-154/+139
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