mathdef.h 2.5 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980
  1. /* Copyright (C) 1997,1998,1999,2000,2003,2004,2006
  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, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. #if !defined _MATH_H && !defined _COMPLEX_H
  17. # error "Never use <bits/mathdef.h> directly; include <math.h> instead"
  18. #endif
  19. /* FIXME! This file describes properties of the compiler, not the machine;
  20. it should not be part of libc! */
  21. #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
  22. # define _MATH_H_MATHDEF 1
  23. # ifdef __GNUC__
  24. # if __STDC__ == 1
  25. /* In GNU or ANSI mode, gcc leaves `float' expressions as-is. */
  26. typedef float float_t;
  27. typedef double double_t;
  28. # else
  29. /* For `gcc -traditional', `float' expressions are evaluated as `double'. */
  30. typedef double float_t;
  31. typedef double double_t;
  32. # endif
  33. # else
  34. /* Wild guess at types for float_t and double_t. */
  35. typedef double float_t;
  36. typedef double double_t;
  37. # endif
  38. /* The values returned by `ilogb' for 0 and NaN respectively. */
  39. # define FP_ILOGB0 (-2147483647)
  40. # define FP_ILOGBNAN (2147483647)
  41. #endif /* ISO C99 && MATH_H */
  42. #if defined _COMPLEX_H && !defined _COMPLEX_H_MATHDEF
  43. # define _COMPLEX_H_MATHDEF 1
  44. # if defined(__GNUC__) && !__GNUC_PREREQ(3,4)
  45. /* Due to an ABI change, we need to remap the complex float symbols. */
  46. # define _Mdouble_ float
  47. # define __MATHCALL(function, args) \
  48. __MATHDECL (_Complex float, function, args)
  49. # define __MATHDECL(type, function, args) \
  50. __MATHDECL_1(type, function##f, args, __c1_##function##f); \
  51. __MATHDECL_1(type, __##function##f, args, __c1_##function##f)
  52. # define __MATHDECL_1(type, function, args, alias) \
  53. extern type function args __asm__(#alias) __THROW
  54. # include <bits/cmathcalls.h>
  55. # undef _Mdouble_
  56. # undef __MATHCALL
  57. # undef __MATHDECL
  58. # undef __MATHDECL_1
  59. # endif /* GNUC before 3.4 */
  60. #endif /* COMPLEX_H */