1/* Copyright (C) 2011-2020 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 <https://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#include <libm-alias-double.h>
24
25
26#if LIBM_SVID_COMPAT
27/* wrapper j0 */
28double
29__j0 (double x)
30{
31 if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0)
32 && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
33 /* j0(|x|>X_TLOSS) */
34 return __kernel_standard (x, x, 34);
35
36 return __ieee754_j0 (x);
37}
38libm_alias_double (__j0, j0)
39
40
41/* wrapper y0 */
42double
43__y0 (double x)
44{
45 if (__builtin_expect (islessequal (x, 0.0) || isgreater (x, X_TLOSS), 0)
46 && _LIB_VERSION != _IEEE_)
47 {
48 if (x < 0.0)
49 {
50 /* d = zero/(x-x) */
51 __feraiseexcept (FE_INVALID);
52 return __kernel_standard (x, x, 9);
53 }
54 else if (x == 0.0)
55 {
56 /* d = -one/(x-x) */
57 __feraiseexcept (FE_DIVBYZERO);
58 return __kernel_standard (x, x, 8);
59 }
60 else if (_LIB_VERSION != _POSIX_)
61 /* y0(x>X_TLOSS) */
62 return __kernel_standard (x, x, 35);
63 }
64
65 return __ieee754_y0 (x);
66}
67libm_alias_double (__y0, y0)
68#endif
69