w_coshl.c 1.1 KB

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  1. /* w_acoshl.c -- long double version of w_acosh.c.
  2. * Conversion to long double by Ulrich Drepper,
  3. * Cygnus Support, drepper@cygnus.com.
  4. * Optimizations bu Ulrich Drepper <drepper@gmail.com>, 2011.
  5. */
  6. /*
  7. * ====================================================
  8. * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
  9. *
  10. * Developed at SunPro, a Sun Microsystems, Inc. business.
  11. * Permission to use, copy, modify, and distribute this
  12. * software is freely granted, provided that this notice
  13. * is preserved.
  14. * ====================================================
  15. */
  16. /*
  17. * wrapper coshl(x)
  18. */
  19. #include <math.h>
  20. #include "math_private.h"
  21. #if !defined __NO_LONG_DOUBLE_MATH
  22. long double
  23. coshl (long double x)
  24. {
  25. #if defined(__UCLIBC_HAS_FENV__)
  26. long double z = (long double) __ieee754_cosh ((double) x);
  27. if (__builtin_expect (!isfinite (z), 0) && isfinite (x)
  28. && _LIB_VERSION != _IEEE_)
  29. return __kernel_standard_l (x, x, 205); /* cosh overflow */
  30. return z;
  31. #else
  32. return (long double) __ieee754_cosh ((double) x);
  33. #endif /* __UCLIBC_HAS_FENV__ */
  34. }
  35. #endif /* __NO_LONG_DOUBLE_MATH */