delta/cpython-git.git/Modules/mathmodule.c, branch fix-cf-feature-versiob

bpo-29782: Consolidate _Py_Bit_Length() (GH-20739)

2020-06-15T12:33:48+00:00

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. (GH-20443)

2020-05-28T07:33:45+00:00

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)

2020-05-26T15:43:38+00:00

Only __index__ should be used to make integer conversions lossless.

bpo-1635741: Port math module to multiphase initialization (GH-19243)

2020-03-31T14:33:22+00:00

bpo-39871: Fix possible SystemError in atan2, copysign and remainder (GH-18806)

2020-03-14T10:45:32+00:00

In math_2(), the first PyFloat_AsDouble() call should be checked
for failure before the second call.

Co-authored-by: Mark Dickinson

bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments. (GH-18604)

2020-02-23T11:21:29+00:00

* 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 

Co-authored-by: Mark Dickinson

bpo-39479:Add math.lcm() function: Least Common Multiple (#18547)

2020-02-19T18:21:37+00:00

* 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)

2020-02-12T21:54:42+00:00

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)

2020-01-21T10:14:10+00:00

Move also math.nextafter() on math.ulp() tests from IsCloseTests to
MathTests.

bpo-31031: Unify duplicate bits_in_digit and bit_length (GH-2866)

2020-01-16T14:09:19+00:00

Add _Py_bit_length() to unify duplicate bits_in_digit() and bit_length().