math/w_j1l.c

   1 /* Copyright (C) 2011, 2012 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
  23
  24 /* wrapper j1l */
  25 long double
  26 __j1l (long double x)
  27 {
  28   if (__builtin_expect (isgreater (fabsl (x), X_TLOSS), 0)
  29       && _LIB_VERSION != _IEEE_)
  30     /* j1(|x|>X_TLOSS) */
  31     return __kernel_standard (x, x, 236);
  32
  33   return __ieee754_j1l (x);
  34 }
  35 weak_alias (__j1l, j1l)
  36
  37
  38 /* wrapper y1l */
  39 long double
  40 __y1l (long double x)
  41 {
  42   if (__builtin_expect (islessequal (x, 0.0L) || isgreater (x, X_TLOSS), 0)
  43       && _LIB_VERSION != _IEEE_)
  44     {
  45       if (x < 0.0L)
  46         {
  47           /* d = zero/(x-x) */
  48           feraiseexcept (FE_INVALID);
  49           return __kernel_standard (x, x, 211);
  50         }
  51       else if (x == 0.0L)
  52         /* d = -one/(x-x) */
  53         return __kernel_standard (x, x, 210);
  54       else
  55         /* y1(x>X_TLOSS) */
  56         return __kernel_standard (x, x, 237);
  57     }
  58
  59   return __ieee754_y1l (x);
  60 }
  61 weak_alias (__y1l, y1l)