sysdeps/sparc/bits/mathdef.h

   1 /* Copyright (C) 1997, 1998, 1999, 2000, 2004, 2006
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #if !defined _MATH_H && !defined _COMPLEX_H
  21 # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
  22 #endif
  23
  24 #include <bits/wordsize.h>
  25
  26 /* FIXME! This file describes properties of the compiler, not the machine;
  27    it should not be part of libc!  */
  28
  29 #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
  30 # define _MATH_H_MATHDEF        1
  31
  32 # ifdef __GNUC__
  33 #  if __STDC__ == 1
  34
  35 /* In GNU or ANSI mode, gcc leaves `float' expressions as-is.  */
  36 typedef float float_t;
  37 typedef double double_t;
  38
  39 #  else
  40
  41 /* For `gcc -traditional', `float' expressions are evaluated as `double'. */
  42 typedef double float_t;
  43 typedef double double_t;
  44
  45 #  endif
  46 # else
  47
  48 /* Wild guess at types for float_t and double_t. */
  49 typedef double float_t;
  50 typedef double double_t;
  51
  52 # endif
  53
  54 /* The values returned by `ilogb' for 0 and NaN respectively.  */
  55 # define FP_ILOGB0       (-2147483647)
  56 # define FP_ILOGBNAN     (2147483647)
  57
  58 #endif  /* ISO C99 */