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* bpo-45548: Remove _math.c workarounds for pre-C99 libm (GH-29179)Christian Heimes2021-10-251-4/+7
| | | | | | | | | | | | | The :mod:`math` and :mod:`cmath` implementation now require a C99 compatible ``libm`` and no longer ship with workarounds for missing acosh, asinh, expm1, and log1p functions. The changeset also removes ``_math.c`` and moves the last remaining workaround into ``_math.h``. This simplifies static builds with ``Modules/Setup`` and resolves symbol conflicts. Co-authored-by: Mark Dickinson <mdickinson@enthought.com> Co-authored-by: Brett Cannon <brett@python.org> Signed-off-by: Christian Heimes <christian@python.org>
* bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157)Christian Heimes2021-10-221-0/+4
| | | | | | | | | | | | | | setup.py no longer defines Py_BUILD_CORE_MODULE. Instead every module defines the macro before #include "Python.h" unless Py_BUILD_CORE_BUILTIN is already defined. Py_BUILD_CORE_BUILTIN is defined for every module that is built by Modules/Setup. The PR also simplifies Modules/Setup. Makefile and makesetup already define Py_BUILD_CORE_BUILTIN and include Modules/internal for us. Signed-off-by: Christian Heimes <christian@python.org>
* bpo-45439: Move _PyObject_CallNoArgs() to pycore_call.h (GH-28895)Victor Stinner2021-10-121-1/+2
| | | | | | | * Move _PyObject_CallNoArgs() to pycore_call.h (internal C API). * _ssl, _sqlite and _testcapi extensions now call the public PyObject_CallNoArgs() function, rather than _PyObject_CallNoArgs(). * _lsprof extension is now built with Py_BUILD_CORE_MODULE macro defined to get access to internal _PyObject_CallNoArgs().
* bpo-45439: Rename _PyObject_CallNoArg() to _PyObject_CallNoArgs() (GH-28891)Victor Stinner2021-10-121-3/+3
| | | | | Fix typo in the private _PyObject_CallNoArg() function name: rename it to _PyObject_CallNoArgs() to be consistent with the public function PyObject_CallNoArgs().
* bpo-35606: Fix math.prod tests using 'start' as keyword parameter (GH-28595)Pablo Galindo Salgado2021-09-281-8/+3
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* bpo-44339: Fix math.pow corner case to comply with IEEE 754 (GH-26606)Mark Dickinson2021-06-121-2/+0
| | | Change the behaviour of `math.pow(0.0, -math.inf)` and `math.pow(-0.0, -math.inf)` to return positive infinity instead of raising `ValueError`. This makes `math.pow` consistent with the built-in `pow` (and the `**` operator) for this particular special case, and brings the `math.pow` special-case handling into compliance with IEEE 754.
* bpo-44357:Add `math.cbrt()` function: Cube Root (GH-26622)Ajith Ramachandran2021-06-101-0/+4
| | | | | | * Add math.cbrt() function: Cube Root Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com> Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* bpo-42161: mathmodule.c: move _PyLong_GetOne() loop invariant (GH-26391)Victor Stinner2021-05-271-8/+12
| | | | | | | | | Move _PyLong_GetZero() and _PyLong_GetOne() loop invariants outside loops in functions: * math.comb() * math.gcd() * math.lcm() * math.perm()
* missing multiply symbol in the documentation (GH-24686)Alperen Serkan Aksöz2021-03-031-1/+1
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* bpo-42323: Fix math.nextafter() on AIX (GH-24381)Victor Stinner2021-01-291-2/+2
| | | math_nextafter_impl() must return a Python object, not a C double.
* bpo-42323: Fix math.nextafter() for NaN on AIX (GH-24265)Victor Stinner2021-01-201-0/+6
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* bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)Victor Stinner2020-10-271-5/+6
| | | | | | Use _PyLong_GetZero() and _PyLong_GetOne() in Modules/ directory. _cursesmodule.c and zoneinfo.c are now built with Py_BUILD_CORE_MODULE macro defined.
* Update link to supporting references (GH-22488)Raymond Hettinger2020-10-011-1/+1
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* bpo-41513: Improve order of adding fractional values. Improve variable ↵Raymond Hettinger2020-09-221-12/+12
| | | | names. (GH-22368)
* Make fractional value accumulation consistent inside and outside the loop. ↵Raymond Hettinger2020-09-181-5/+4
| | | | (GH-22315)
* bpo-41513: Add docs and tests for hypot() (GH-22238)Raymond Hettinger2020-09-131-7/+7
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* bpo-41513: Expand comments and add references for a better understanding ↵Raymond Hettinger2020-09-061-5/+21
| | | | (GH-22123)
* Improve hypot() accuracy with three separate accumulators (GH-22032)Raymond Hettinger2020-09-011-4/+4
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* Further improve accuracy of math.hypot() (GH-22013)Raymond Hettinger2020-08-301-3/+8
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* bpo-41513: Save unnecessary steps in the hypot() calculation (#21994)Raymond Hettinger2020-08-291-5/+10
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* Fix typos in comment (GH-21966)Raymond Hettinger2020-08-261-2/+2
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* bpo-41513: More accurate hypot() (GH-21916)Raymond Hettinger2020-08-241-37/+111
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* bpo-41513: Improve speed and accuracy of math.hypot() (GH-21803)Raymond Hettinger2020-08-151-3/+38
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* On path with known exact float, extract the double with the fast macro. ↵Raymond Hettinger2020-06-231-5/+10
| | | | (GH-21072)
* bpo-29782: Consolidate _Py_Bit_Length() (GH-20739)Niklas Fiekas2020-06-151-0/+1
| | | | | | | | | | In GH-2866, _Py_Bit_Length() was added to pymath.h for lack of a better location. GH-20518 added a more appropriate header file for bit utilities. It also shows how to properly use intrinsics. This allows reconsidering bpo-29782. * Move the function to the new header. * Changed return type to match __builtin_clzl() and reviewed usage. * Use intrinsics where available. * Pick a fallback implementation suitable for inlining.
* bpo-40792: Make the result of PyNumber_Index() always having exact type int. ↵Serhiy Storchaka2020-05-281-28/+2
| | | | | | | | | | | | (GH-20443) Previously, the result could have been an instance of a subclass of int. Also revert bpo-26202 and make attributes start, stop and step of the range object having exact type int. Add private function _PyNumber_Index() which preserves the old behavior of PyNumber_Index() for performance to use it in the conversion functions like PyLong_AsLong().
* bpo-37999: No longer use __int__ in implicit integer conversions. (GH-15636)Serhiy Storchaka2020-05-261-30/+2
| | | | Only __index__ should be used to make integer conversions lossless.
* bpo-1635741: Port math module to multiphase initialization (GH-19243)Dong-hee Na2020-03-311-25/+33
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* bpo-39871: Fix possible SystemError in atan2, copysign and remainder (GH-18806)Zackery Spytz2020-03-141-1/+5
| | | | | | In math_2(), the first PyFloat_AsDouble() call should be checked for failure before the second call. Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments. ↵Serhiy Storchaka2020-02-231-74/+109
| | | | | | | | | | | | | | | | (GH-18604) * bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments. * Simplify fast path. * Difine lcm() without arguments returning 1. * Apply suggestions from code review Co-Authored-By: Mark Dickinson <dickinsm@gmail.com> Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
* bpo-39479:Add math.lcm() function: Least Common Multiple (#18547)ananthan-1232020-02-191-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Update math.rst * Update math.rst * updated whats new * Update test_math.py * Update mathmodule.c * Update mathmodule.c.h * Update ACKS * 📜🤖 Added by blurb_it. * Update 3.9.rst * Update 2020-02-18-12-37-16.bpo-39479.j3UcCq.rst * Update math.rst * Update 2020-02-18-12-37-16.bpo-39479.j3UcCq.rst * Update test_math.py * Update ACKS * Update mathmodule.c.h * Update mathmodule.c * Update mathmodule.c.h * Update mathmodule.c.h Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
* bpo-35081: Move dtoa.h header to the internal C API (GH-18489)Victor Stinner2020-02-121-0/+1
| | | | | | | Move the dtoa.h header file to the internal C API as pycore_dtoa.h: it only contains private functions (prefixed by "_Py"). The math and cmath modules must now be compiled with the Py_BUILD_CORE macro defined.
* bpo-39396: Fix math.nextafter(-0.0, +0.0) on AIX 7.1 (GH-18094)Victor Stinner2020-01-211-2/+8
| | | | Move also math.nextafter() on math.ulp() tests from IsCloseTests to MathTests.
* bpo-31031: Unify duplicate bits_in_digit and bit_length (GH-2866)Niklas Fiekas2020-01-161-25/+3
| | | Add _Py_bit_length() to unify duplicate bits_in_digit() and bit_length().
* bpo-39310: Add math.ulp(x) (GH-17965)Victor Stinner2020-01-131-0/+32
| | | | Add math.ulp(): return the value of the least significant bit of a float.
* bpo-39288: Add math.nextafter(x, y) (GH-17937)Victor Stinner2020-01-121-0/+20
| | | Return the next floating-point value after x towards y.
* bpo-38835: Don't use PyFPE_START_PROTECT and PyFPE_END_PROTECT (GH-17231)Victor Stinner2019-11-201-19/+0
| | | | | The PyFPE_START_PROTECT() and PyFPE_END_PROTECT() macros are empty: they have been doing nothing for the last year (since commit 735ae8d139a673b30b321dc10acfd3d14f0d633b), so stop using them.
* bpo-38639: Optimize floor(), ceil() and trunc() for floats. (GH-16991)Serhiy Storchaka2019-11-161-20/+28
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* bpo-37691: Let math.dist() accept sequences and iterables for coordinates ↵Raymond Hettinger2019-07-271-6/+36
| | | | (GH-14975)
* Fix inconsequential typo in math.remainder algorithm comments. (#14746)Mark Dickinson2019-07-131-1/+1
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* bpo-37548: Document range of atan, acos and asin (GH-14717)Giovanni Cappellotto2019-07-131-3/+6
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* Fix some typos (GH-14435)Min ho Kim2019-07-051-1/+1
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* bpo-37315: Deprecate accepting floats in math.factorial(). (GH-14147)Serhiy Storchaka2019-06-171-0/+6
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* Turn math.isqrt assertion into a comment to clarify its purpose. (GH-14131)Mark Dickinson2019-06-161-1/+1
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* Simplify negativity checks in math.comb and math.perm. (GH-13870)Mark Dickinson2019-06-161-10/+16
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* bpo-37178: Allow a one argument form of math.perm() (GH-13905)Raymond Hettinger2019-06-081-2/+8
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* bpo-35431: Drop the k <= n requirement (GH-13798)Raymond Hettinger2019-06-041-15/+18
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* bpo-37128: Add math.perm(). (GH-13731)Serhiy Storchaka2019-06-021-1/+129
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* bpo-35431: Refactor math.comb() implementation. (GH-13725)Serhiy Storchaka2019-06-011-74/+81
| | | | | | | * Fixed some bugs. * Added support for index-likes objects. * Improved error messages. * Cleaned up and optimized the code. * Added more tests.
* bpo-35431: Implemented math.comb (GH-11414)Yash Aggarwal2019-06-011-0/+121
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