glibc/e_exp2f-fma.c at abddd61de090ae84e380aff68a98bd94ef704667 - glibc - Gitea: Git with a cup of tea

AuroraMiddleware/glibc

mirror of https://sourceware.org/git/glibc.git synced 2024-11-27 07:20:11 +00:00

H.J. Lu 5d15c96975 x86-64: Add exp2f with FMA

For workload-spec2017.wrf, on Skylake, it improves performance by:

                           Before            After     Improvement
reciprocal-throughput      13.0291          11.2225       16%
latency                    44.5154          37.5766       18%

	* sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines):
	Add e_exp2f-fma.
	(CFLAGS-e_exp2f-fma.c): New.
	* sysdeps/x86_64/fpu/multiarch/e_exp2f-fma.c: New file.
	* sysdeps/x86_64/fpu/multiarch/e_exp2f.c: Likewise.

2017-10-22 07:57:50 -07:00

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	`#define __exp2f __exp2f_fma`

	`#include <sysdeps/ieee754/flt-32/e_exp2f.c>`