1/* Copyright (C) 2011-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
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
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <fenv.h>
19#include <math.h>
20#include <math_private.h>
21#include <math-svid-compat.h>
22#include <libm-alias-double.h>
23
24
25#if LIBM_SVID_COMPAT
26/* wrapper jn */
27double
28__jn (int n, double x)
29{
30 if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0)
31 && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
32 /* jn(n,|x|>X_TLOSS) */
33 return __kernel_standard (n, x, 38);
34
35 return __ieee754_jn (n, x);
36}
37libm_alias_double (__jn, jn)
38
39
40/* wrapper yn */
41double
42__yn (int n, double x)
43{
44 if (__builtin_expect (islessequal (x, 0.0) || isgreater (x, X_TLOSS), 0)
45 && _LIB_VERSION != _IEEE_)
46 {
47 if (x < 0.0)
48 {
49 /* d = zero/(x-x) */
50 __feraiseexcept (FE_INVALID);
51 return __kernel_standard (n, x, 13);
52 }
53 else if (x == 0.0)
54 {
55 /* d = -one/(x-x) */
56 __feraiseexcept (FE_DIVBYZERO);
57 return __kernel_standard (n, x, 12);
58 }
59 else if (_LIB_VERSION != _POSIX_)
60 /* yn(n,x>X_TLOSS) */
61 return __kernel_standard (n, x, 39);
62 }
63
64 return __ieee754_yn (n, x);
65}
66libm_alias_double (__yn, yn)
67#endif
68