w_j1l.c 2.0 KB

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  1. /* Copyright (C) 2011-2016 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
  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. #include <math.h>
  16. #include "math_private.h"
  17. #if __UCLIBC_HAS_FENV__
  18. #include <fenv.h>
  19. #endif
  20. #if !defined __NO_LONG_DOUBLE_MATH
  21. # ifndef __DO_XSI_MATH__
  22. /* wrapper j1l */
  23. long double
  24. j1l (long double x)
  25. {
  26. # if __UCLIBC_HAS_FENV__
  27. if (__builtin_expect (isgreater (fabsl (x), X_TLOSS), 0)
  28. && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
  29. /* j1(|x|>X_TLOSS) */
  30. return __kernel_standard_l (x, x, 236);
  31. # endif /* __UCLIBC_HAS_FENV__ */
  32. return (long double) __ieee754_j1 ((double) x);
  33. }
  34. /* wrapper y1l */
  35. long double
  36. y1l (long double x)
  37. {
  38. # if __UCLIBC_HAS_FENV__
  39. if (__builtin_expect (islessequal (x, 0.0L) || isgreater (x, X_TLOSS), 0)
  40. && _LIB_VERSION != _IEEE_)
  41. {
  42. if (x < 0.0L)
  43. {
  44. /* d = zero/(x-x) */
  45. feraiseexcept (FE_INVALID);
  46. return __kernel_standard_l (x, x, 211);
  47. }
  48. else if (x == 0.0L)
  49. {
  50. /* d = -one/(x-x) */
  51. feraiseexcept (FE_DIVBYZERO);
  52. return __kernel_standard_l (x, x, 210);
  53. }
  54. else if (_LIB_VERSION != _POSIX_)
  55. /* y1(x>X_TLOSS) */
  56. return __kernel_standard_l (x, x, 237);
  57. }
  58. # endif /* __UCLIBC_HAS_FENV__ */
  59. return (long double) __ieee754_y1 ((double) x);
  60. }
  61. # endif /* __DO_XSI_MATH__ */
  62. #endif /* __NO_LONG_DOUBLE_MATH */