sysdeps/arm/bits/mathdef.h

   1 /* Copyright (C) 1999-2015 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #if !defined _MATH_H && !defined _COMPLEX_H
  19 # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
  20 #endif
  21
  22 #if defined  __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
  23 # define _MATH_H_MATHDEF        1
  24
  25 /* GCC does not promote `float' values to `double'.  */
  26 typedef float float_t;          /* `float' expressions are evaluated as
  27                                    `float'.  */
  28 typedef double double_t;        /* `double' expressions are evaluated as
  29                                    `double'.  */
  30
  31 /* The values returned by `ilogb' for 0 and NaN respectively.  */
  32 # define FP_ILOGB0      (-2147483647)
  33 # define FP_ILOGBNAN    (2147483647)
  34
  35 /* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
  36    builtins are supported.  */
  37 # ifdef __FP_FAST_FMA
  38 #  define FP_FAST_FMA 1
  39 # endif
  40
  41 # ifdef __FP_FAST_FMAF
  42 #  define FP_FAST_FMAF 1
  43 # endif
  44
  45 # ifdef __FP_FAST_FMAL
  46 #  define FP_FAST_FMAL 1
  47 # endif
  48
  49 #endif  /* ISO C99 */
  50
  51 #ifndef __NO_LONG_DOUBLE_MATH
  52 /* Signal that we do not really have a `long double'.  This disables the
  53    declaration of all the `long double' function variants.  */
  54 # define __NO_LONG_DOUBLE_MATH  1
  55 #endif