mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-30 21:48:47 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

bpo-45440: Require math.h isinf() to build (GH-28894)

Browse source 
Building Python now requires a C99 <math.h> header file providing
isinf(), isnan() and isfinite() functions.

Remove the Py_FORCE_DOUBLE() macro. It was used by the
Py_IS_INFINITY() macro.

Changes:

* Remove Py_IS_NAN(), Py_IS_INFINITY() and Py_IS_FINITE()
  in PC/pyconfig.h.
* Remove the _Py_force_double() function.
* configure no longer checks if math.h defines isinf(), isnan() and
  isfinite().
This commit is contained in:
Victor Stinner 2021-10-13 23:27:50 +02:00 • committed by GitHub
parent aac29af678
commit 194a9526d8
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
10 changed files with 25 additions and 143 deletions
Download patch file Download diff file Expand all files Collapse all files

3
Include/internal/pycore_pymath.h
View file

@ -142,6 +142,9 @@ extern void _Py_set_387controlword(unsigned short);
// Get and set x87 control word for VisualStudio/x86.
// x87 is not supported in 64-bit or ARM.
#if defined(_MSC_VER) && !defined(_WIN64) && !defined(_M_ARM)
#include <float.h> // __control87_2()
#define _Py_SET_53BIT_PRECISION_HEADER \
unsigned int old_387controlword, new_387controlword, out_387controlword
// We use the __control87_2 function to set only the x87 control word.