mathdef.h 1.8 KB

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  1. /* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14. Boston, MA 02111-1307, USA. */
  15. #if !defined _MATH_H && !defined _COMPLEX_H
  16. # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
  17. #endif
  18. #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
  19. # define _MATH_H_MATHDEF 1
  20. /* GCC does not promote `float' values to `double'. */
  21. typedef float float_t; /* `float' expressions are evaluated as
  22. `float'. */
  23. typedef double double_t; /* `double' expressions are evaluated as
  24. `double'. */
  25. /* Define `INFINITY' as value of type `float'. */
  26. # define INFINITY HUGE_VALF
  27. /* The values returned by `ilogb' for 0 and NaN respectively. */
  28. # define FP_ILOGB0 (-2147483647)
  29. # define FP_ILOGBNAN (2147483647)
  30. #endif /* ISO C99 */
  31. #ifndef __NO_LONG_DOUBLE_MATH
  32. /* Signal that we do not really have a `long double'. This disables the
  33. declaration of all the `long double' function variants. */
  34. /* XXX The FPA does support this but the patterns in GCC are currently
  35. turned off. */
  36. # define __NO_LONG_DOUBLE_MATH 1
  37. #endif