w_j0l_compat.c 1.9 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768
  1. /* Copyright (C) 2011-2019 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 <fenv.h>
  16. #include <math.h>
  17. #include <math_private.h>
  18. #include <math-svid-compat.h>
  19. #include <libm-alias-ldouble.h>
  20. #if LIBM_SVID_COMPAT
  21. /* wrapper j0l */
  22. long double
  23. __j0l (long double x)
  24. {
  25. if (__builtin_expect (isgreater (fabsl (x), X_TLOSS), 0)
  26. && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
  27. /* j0(|x|>X_TLOSS) */
  28. return __kernel_standard_l (x, x, 234);
  29. return __ieee754_j0l (x);
  30. }
  31. libm_alias_ldouble (__j0, j0)
  32. /* wrapper y0l */
  33. long double
  34. __y0l (long double x)
  35. {
  36. if (__builtin_expect (islessequal (x, 0.0L) || isgreater (x, X_TLOSS), 0)
  37. && _LIB_VERSION != _IEEE_)
  38. {
  39. if (x < 0.0L)
  40. {
  41. /* d = zero/(x-x) */
  42. feraiseexcept (FE_INVALID);
  43. return __kernel_standard_l (x, x, 209);
  44. }
  45. else if (x == 0.0L)
  46. {
  47. /* d = -one/(x-x) */
  48. feraiseexcept (FE_DIVBYZERO);
  49. return __kernel_standard_l (x, x, 208);
  50. }
  51. else if (_LIB_VERSION != _POSIX_)
  52. /* y0(x>X_TLOSS) */
  53. return __kernel_standard_l (x, x, 235);
  54. }
  55. return __ieee754_y0l (x);
  56. }
  57. libm_alias_ldouble (__y0, y0)
  58. #endif