modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/i386-linux-gnu/bits/fp-fast.h (about)

     1  /* Define FP_FAST_* macros.
     2     Copyright (C) 2016-2018 Free Software Foundation, Inc.
     3     This file is part of the GNU C Library.
     4  
     5     The GNU C Library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Lesser General Public
     7     License as published by the Free Software Foundation; either
     8     version 2.1 of the License, or (at your option) any later version.
     9  
    10     The GNU C Library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Lesser General Public License for more details.
    14  
    15     You should have received a copy of the GNU Lesser General Public
    16     License along with the GNU C Library; if not, see
    17     <http://www.gnu.org/licenses/>.  */
    18  
    19  #ifndef _MATH_H
    20  # error "Never use <bits/fp-fast.h> directly; include <math.h> instead."
    21  #endif
    22  
    23  #ifdef __USE_ISOC99
    24  
    25  /* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
    26     builtins are supported.  */
    27  # ifdef __FP_FAST_FMA
    28  #  define FP_FAST_FMA 1
    29  # endif
    30  
    31  # ifdef __FP_FAST_FMAF
    32  #  define FP_FAST_FMAF 1
    33  # endif
    34  
    35  # ifdef __FP_FAST_FMAL
    36  #  define FP_FAST_FMAL 1
    37  # endif
    38  
    39  #endif