summaryrefslogtreecommitdiff
path: root/math/w_j1.c
blob: 358e0e192b6dd4f613060c3278243243b044936f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/* Copyright (C) 2011 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <fenv.h>
#include <math.h>
#include <math_private.h>


/* wrapper j1 */
double
j1 (double x)
{
  if (__builtin_expect (fabs (x) > X_TLOSS, 0) && _LIB_VERSION != _IEEE_)
    /* j1(|x|>X_TLOSS) */
    return __kernel_standard (x, x, 36);

  return __ieee754_j1 (x);
}
#ifdef NO_LONG_DOUBLE
strong_alias (j1, j1l)
#endif


/* wrapper y1 */
double
y1 (double x)
{
  if (__builtin_expect (x <= 0.0 || x > X_TLOSS, 0) && _LIB_VERSION != _IEEE_)
    {
      if (x < 0.0)
	{
	  /* d = zero/(x-x) */
	  feraiseexcept (FE_INVALID);
	  return __kernel_standard (x, x, 11);
	}
      else if (x == 0.0)
	/* d = -one/(x-x) */
	return __kernel_standard (x, x, 10);
      else
	/* y1(x>X_TLOSS) */
	return __kernel_standard (x, x, 37);
    }

  return __ieee754_y1 (x);
}
#ifdef NO_LONG_DOUBLE
strong_alias (y1, y1l)
#endif