diff options
Diffstat (limited to 'REORG.TODO/sysdeps/x86_64/fpu/multiarch/s_fma.c')
-rw-r--r-- | REORG.TODO/sysdeps/x86_64/fpu/multiarch/s_fma.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/fpu/multiarch/s_fma.c b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/s_fma.c new file mode 100644 index 0000000000..3ac4fed660 --- /dev/null +++ b/REORG.TODO/sysdeps/x86_64/fpu/multiarch/s_fma.c @@ -0,0 +1,50 @@ +/* FMA version of fma. + Copyright (C) 2009-2017 Free Software Foundation, Inc. + Contributed by Intel Corporation. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <config.h> +#include <math.h> +#include <init-arch.h> + +extern double __fma_sse2 (double x, double y, double z) attribute_hidden; + + +static double +__fma_fma3 (double x, double y, double z) +{ + asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z)); + return x; +} + + +static double +__fma_fma4 (double x, double y, double z) +{ + asm ("vfmaddsd %3, %2, %1, %0" : "=x" (x) : "x" (x), "x" (y), "x" (z)); + return x; +} + + +libm_ifunc (__fma, HAS_ARCH_FEATURE (FMA_Usable) + ? __fma_fma3 : (HAS_ARCH_FEATURE (FMA4_Usable) + ? __fma_fma4 : __fma_sse2)); +weak_alias (__fma, fma) + +#define __fma __fma_sse2 + +#include <sysdeps/ieee754/dbl-64/s_fma.c> |