math/w_j0l_compat.c

   1 /* Copyright (C) 2011-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <math.h>
  21 #include <math_private.h>
  22 #include <math-svid-compat.h>
  23
  24
  25 /* wrapper j0l */
  26 long double
  27 __j0l (long double x)
  28 {
  29   if (__builtin_expect (isgreater (fabsl (x), X_TLOSS), 0)
  30       && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
  31     /* j0(|x|>X_TLOSS) */
  32     return __kernel_standard_l (x, x, 234);
  33
  34   return __ieee754_j0l (x);
  35 }
  36 weak_alias (__j0l, j0l)
  37
  38
  39 /* wrapper y0l */
  40 long double
  41 __y0l (long double x)
  42 {
  43   if (__builtin_expect (islessequal (x, 0.0L) || isgreater (x, X_TLOSS), 0)
  44       && _LIB_VERSION != _IEEE_)
  45     {
  46       if (x < 0.0L)
  47         {
  48           /* d = zero/(x-x) */
  49           feraiseexcept (FE_INVALID);
  50           return __kernel_standard_l (x, x, 209);
  51         }
  52       else if (x == 0.0L)
  53         {
  54           /* d = -one/(x-x) */
  55           feraiseexcept (FE_DIVBYZERO);
  56           return __kernel_standard_l (x, x, 208);
  57         }
  58       else if (_LIB_VERSION != _POSIX_)
  59         /* y0(x>X_TLOSS) */
  60         return __kernel_standard_l (x, x, 235);
  61     }
  62
  63   return __ieee754_y0l (x);
  64 }
  65 weak_alias (__y0l, y0l)