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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* FMA version of fmaf.
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Copyright (C) 2009-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <math.h>
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#include <init-arch.h>
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#include <libm-alias-float.h>
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extern float __fmaf_sse2 (float x, float y, float z) attribute_hidden;
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static float
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__fmaf_fma3 (float x, float y, float z)
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{
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asm ("vfmadd213ss %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z));
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return x;
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}
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static float
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__fmaf_fma4 (float x, float y, float z)
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{
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asm ("vfmaddss %3, %2, %1, %0" : "=x" (x) : "x" (x), "x" (y), "x" (z));
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return x;
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}
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libm_ifunc (__fmaf, HAS_ARCH_FEATURE (FMA_Usable)
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? __fmaf_fma3 : (HAS_ARCH_FEATURE (FMA4_Usable)
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? __fmaf_fma4 : __fmaf_sse2));
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libm_alias_float (__fma, fma)
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#define __fmaf __fmaf_sse2
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#include <sysdeps/ieee754/dbl-64/s_fmaf.c>
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