git.ipfire.org Git - thirdparty/glibc.git/commit

author	H.J. Lu <hjl.tools@gmail.com>
	Fri, 11 Aug 2023 15:04:08 +0000 (08:04 -0700)
committer	Sunil K Pandey <skpgkp2@gmail.com>
	Fri, 10 Jan 2025 05:24:41 +0000 (21:24 -0800)
commit	c0cae389fbf4f7ce3a03177a8cf1ab546f1d3168
tree	a4fe132549e6ede26a6356aafa341524afa42b1f	tree
parent	360786305036f5229338daca3a701edc3f9c25cc	commit \| diff

x86_64: Add expm1 with FMA

On Skylake, it improves expm1 bench performance by:

        Before       After     Improvement
max     70.204       68.054       3%
min     20.709       16.2         22%
mean    22.1221      16.7367      24%

NB: Add

extern long double __expm1l (long double);
extern long double __expm1f128 (long double);

for __typeof (__expm1l) and __typeof (__expm1f128) when __expm1 is
defined since __expm1 may be expanded in their declarations which
causes the build failure.

(cherry picked from commit 1b214630ce6f7e0099b8b6f87246246739b079cf)

sysdeps/ieee754/dbl-64/s_expm1.c		diff \| blob \| blame \| history
sysdeps/x86_64/fpu/multiarch/Makefile		diff \| blob \| blame \| history
sysdeps/x86_64/fpu/multiarch/s_expm1-fma.c	[new file with mode: 0644]	blob
sysdeps/x86_64/fpu/multiarch/s_expm1.c	[new file with mode: 0644]	blob