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59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/* FMA version of fma.
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Copyright (C) 2009-2015 Free Software Foundation, Inc.
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Contributed by Intel Corporation.
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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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#ifdef HAVE_AVX_SUPPORT
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extern double __fma_sse2 (double x, double y, double z) attribute_hidden;
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static double
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__fma_fma3 (double x, double y, double z)
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{
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asm ("vfmadd213sd %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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# ifdef HAVE_FMA4_SUPPORT
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static double
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__fma_fma4 (double x, double y, double z)
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{
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asm ("vfmaddsd %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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# else
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# undef HAS_FMA4
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# define HAS_FMA4 0
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# define __fma_fma4 ((void *) 0)
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# endif
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libm_ifunc (__fma, HAS_FMA
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? __fma_fma3 : (HAS_FMA4 ? __fma_fma4 : __fma_sse2));
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weak_alias (__fma, fma)
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# define __fma __fma_sse2
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#endif
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#include <sysdeps/ieee754/dbl-64/s_fma.c>
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