| 1 | /* FMA version of fma. |
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| 2 | Copyright (C) 2009-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #define NO_MATH_REDIRECT |
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| 20 | #include <config.h> |
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| 21 | #define dfmal __hide_dfmal |
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| 22 | #define f32xfmaf64 __hide_f32xfmaf64 |
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| 23 | #include <math.h> |
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| 24 | #undef dfmal |
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| 25 | #undef f32xfmaf64 |
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| 26 | #include <init-arch.h> |
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| 27 | #include <libm-alias-double.h> |
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| 28 | #include <math-narrow-alias.h> |
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| 29 | |
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| 30 | extern double __fma_sse2 (double x, double y, double z) attribute_hidden; |
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| 31 | |
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| 32 | |
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| 33 | static double |
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| 34 | __fma_fma3 (double x, double y, double z) |
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| 35 | { |
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| 36 | asm ("vfmadd213sd %3, %2, %0" : "=x" (x) : "0" (x), "x" (y), "xm" (z)); |
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| 37 | return x; |
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| 38 | } |
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| 39 | |
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| 40 | |
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| 41 | static double |
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| 42 | __fma_fma4 (double x, double y, double z) |
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| 43 | { |
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| 44 | asm ("vfmaddsd %3, %2, %1, %0" : "=x" (x) : "x" (x), "x" (y), "x" (z)); |
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| 45 | return x; |
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| 46 | } |
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| 47 | |
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| 48 | |
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| 49 | libm_ifunc (__fma, CPU_FEATURE_USABLE (FMA) |
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| 50 | ? __fma_fma3 : (CPU_FEATURE_USABLE (FMA4) |
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| 51 | ? __fma_fma4 : __fma_sse2)); |
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| 52 | libm_alias_double (__fma, fma) |
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| 53 | libm_alias_double_narrow (__fma, fma) |
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| 54 | |
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| 55 | #define __fma __fma_sse2 |
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| 56 | |
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| 57 | #include <sysdeps/ieee754/dbl-64/s_fma.c> |
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| 58 | |
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