mathdef.h 1.6 KB

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  1. /* Copyright (C) 2000, 2001, 2004, 2007
  2. Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  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. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  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. /* Xtensa has `float' and `double' operations. */
  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. /* The values returned by `ilogb' for 0 and NaN respectively. */
  26. # define FP_ILOGB0 (-2147483647)
  27. # define FP_ILOGBNAN 2147483647
  28. #endif /* ISO C99 */
  29. #ifndef __NO_LONG_DOUBLE_MATH
  30. /* Signal that we do not really have a `long double'. The disables the
  31. declaration of all the `long double' function variants. */
  32. # define __NO_LONG_DOUBLE_MATH 1
  33. #endif