w_fmod_template.c 1.5 KB

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  1. /* Wrapper to set errno for fmod.
  2. Copyright (C) 2017-2019 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. /* Only build wrappers from the templates for the types that define the macro
  16. below. This macro is set in math-type-macros-<type>.h in sysdeps/generic
  17. for each floating-point type. */
  18. #if __USE_WRAPPER_TEMPLATE
  19. # include <errno.h>
  20. # include <fenv.h>
  21. # include <math.h>
  22. # include <math_private.h>
  23. FLOAT
  24. M_DECL_FUNC (__fmod) (FLOAT x, FLOAT y)
  25. {
  26. if (__builtin_expect (isinf (x) || y == 0, 0) && !isnan (y) && !isnan (x))
  27. /* Domain error: fmod(+-Inf,y) or fmod(x,0).
  28. If x or y are nan, these conditions should not be considered. */
  29. __set_errno (EDOM);
  30. return M_SUF (__ieee754_fmod) (x, y);
  31. }
  32. declare_mgen_alias (__fmod, fmod)
  33. #endif /* __USE_WRAPPER_TEMPLATE. */