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* GH-98897: fix memory leak if `math.dist` raises exception (GH-98898)Miss Islington (bot)2022-11-011-3/+3
| | | | | (cherry picked from commit ab575050709e2b313ca9a9585f09b6f4b0560318) Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>
* bpo-46018: Ensure that math.expm1 does not raise on underflow (GH-29997)Miss Islington (bot)2021-12-091-2/+6
| | | | | (cherry picked from commit 3363e1cb05d0d19ed172ea63606d8cb6268747fc) Co-authored-by: Steve Dower <steve.dower@python.org>
* bpo-35606: Fix math.prod tests using 'start' as keyword parameter (GH-28595)Miss Islington (bot)2021-09-281-8/+3
| | | | | (cherry picked from commit 84975146a7ce64f1d50dcec8311b7f7188a5c962) Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
* bpo-42161: mathmodule.c: move _PyLong_GetOne() loop invariant (GH-26391) ↵Miss Islington (bot)2021-05-261-8/+12
| | | | | | | | | | | | | | (GH-26393) Move _PyLong_GetZero() and _PyLong_GetOne() loop invariants outside loops in functions: * math.comb() * math.gcd() * math.lcm() * math.perm() (cherry picked from commit 3e7ee02327db13e4337374597cdc4458ecb9e3ad) Co-authored-by: Victor Stinner <vstinner@python.org>
* 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 Hettinger2020-10-021-1/+1
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* bpo-41513: Improve order of adding fractional values. Improve variable ↵Raymond Hettinger2020-09-231-12/+12
| | | | names. (GH-22368)
* Make fractional value accumulation consistent inside and outside the loop. ↵Raymond Hettinger2020-09-191-5/+4
| | | | (GH-22315)
* bpo-41513: Add docs and tests for hypot() (GH-22238)Raymond Hettinger2020-09-141-7/+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 Hettinger2020-09-021-4/+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 Hettinger2020-08-251-37/+111
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* bpo-41513: Improve speed and accuracy of math.hypot() (GH-21803)Raymond Hettinger2020-08-161-3/+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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* bpo-36957: Speed up math.isqrt (#13405)Mark Dickinson2019-05-191-8/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add math.isqrt function computing the integer square root. * Code cleanup: remove redundant comments, rename some variables. * Tighten up code a bit more; use Py_XDECREF to simplify error handling. * Update Modules/mathmodule.c Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Update Modules/mathmodule.c Use real argument clinic type instead of an alias Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Add proof sketch * Updates from review. * Correct and expand documentation. * Fix bad reference handling on error; make some variables block-local; other tidying. * Style and consistency fixes. * Add missing error check; don't try to DECREF a NULL a * Simplify some error returns. * Another two test cases: - clarify that floats are rejected even if they happen to be squares of small integers - TypeError beats ValueError for a negative float * Add fast path for small inputs. Needs tests. * Speed up isqrt for n >= 2**64 as well; add extra tests. * Reduce number of test-cases to avoid dominating the run-time of test_math. * Don't perform unnecessary extra iterations when computing c_bit_length. * Abstract common uint64_t code out into a separate function. * Cleanup. * Add a missing Py_DECREF in an error branch. More cleanup. * Update Modules/mathmodule.c Add missing `static` declaration to helper function. Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Add missing backtick.
* bpo-36957: Add _PyLong_Rshift() and _PyLong_Lshift(). (GH-13416)Serhiy Storchaka2019-05-191-23/+7
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* bpo-36887: add math.isqrt (GH-13244)Mark Dickinson2019-05-181-0/+261
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add math.isqrt function computing the integer square root. * Code cleanup: remove redundant comments, rename some variables. * Tighten up code a bit more; use Py_XDECREF to simplify error handling. * Update Modules/mathmodule.c Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Update Modules/mathmodule.c Use real argument clinic type instead of an alias Co-Authored-By: Serhiy Storchaka <storchaka@gmail.com> * Add proof sketch * Updates from review. * Correct and expand documentation. * Fix bad reference handling on error; make some variables block-local; other tidying. * Style and consistency fixes. * Add missing error check; don't try to DECREF a NULL a * Simplify some error returns. * Another two test cases: - clarify that floats are rejected even if they happen to be squares of small integers - TypeError beats ValueError for a negative float * Documentation and markup improvements; thanks Serhiy for the suggestions! * Cleaner Misc/NEWS entry wording. * Clean up (with one fix) to the algorithm explanation and proof.
* bpo-36908: 'This module is always available' isn't helpful. (#13297)Ned Batchelder2019-05-171-2/+2
| | | | Makes the documentation of math and cmath module more helpful for the beginners.
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