sysdeps/arm/bits/mathdef.h

   1 /* Copyright (C) 1999, 2000, 2004, 2006, 2007, 2010
   2    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 #if !defined _MATH_H && !defined _COMPLEX_H
  20 # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
  21 #endif
  22
  23 #if defined  __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
  24 # define _MATH_H_MATHDEF        1
  25
  26 /* GCC does not promote `float' values to `double'.  */
  27 typedef float float_t;          /* `float' expressions are evaluated as
  28                                    `float'.  */
  29 typedef double double_t;        /* `double' expressions are evaluated as
  30                                    `double'.  */
  31
  32 /* The values returned by `ilogb' for 0 and NaN respectively.  */
  33 # define FP_ILOGB0      (-2147483647)
  34 # define FP_ILOGBNAN    (2147483647)
  35
  36 /* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
  37    builtins are supported.  */
  38 # if __FP_FAST_FMA
  39 #  define FP_FAST_FMA 1
  40 # endif
  41
  42 # if __FP_FAST_FMAF
  43 #  define FP_FAST_FMAF 1
  44 # endif
  45
  46 # if __FP_FAST_FMAL
  47 #  define FP_FAST_FMAL 1
  48 # endif
  49
  50 #endif  /* ISO C99 */
  51
  52 #ifndef __NO_LONG_DOUBLE_MATH
  53 /* Signal that we do not really have a `long double'.  This disables the
  54    declaration of all the `long double' function variants.  */
  55 # define __NO_LONG_DOUBLE_MATH  1
  56 #endif