1 /* Copyright (C) 2011-2016 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 <math.h>
20 #include "math_private.h"
21 #if defined(__UCLIBC_HAS_FENV__)
22 #include <fenv.h>
23 #endif
24
25 #if !defined __NO_LONG_DOUBLE_MATH
26 # ifndef __DO_XSI_MATH__
27 /* wrapper j0l */
28 long double
j0l(long double x)29 j0l (long double x)
30 {
31 # if defined(__UCLIBC_HAS_FENV__)
32 if (__builtin_expect (isgreater (fabsl (x), X_TLOSS), 0)
33 && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_)
34 /* j0(|x|>X_TLOSS) */
35 return __kernel_standard_l (x, x, 234);
36 # endif /* __UCLIBC_HAS_FENV__ */
37 return (long double) __ieee754_j0 ((double)x);
38 }
39
40 /* wrapper y0l */
41 long double
y0l(long double x)42 y0l (long double x)
43 {
44 # if defined(__UCLIBC_HAS_FENV__)
45 if (__builtin_expect (islessequal (x, 0.0L) || isgreater (x, X_TLOSS), 0)
46 && _LIB_VERSION != _IEEE_)
47 {
48 if (x < 0.0L)
49 {
50 /* d = zero/(x-x) */
51 feraiseexcept (FE_INVALID);
52 return __kernel_standard_l (x, x, 209);
53 }
54 else if (x == 0.0L)
55 {
56 /* d = -one/(x-x) */
57 feraiseexcept (FE_DIVBYZERO);
58 return __kernel_standard_l (x, x, 208);
59 }
60 else if (_LIB_VERSION != _POSIX_)
61 /* y0(x>X_TLOSS) */
62 return __kernel_standard_l (x, x, 235);
63 }
64 # endif /* __UCLIBC_HAS_FENV__ */
65 return (long double)__ieee754_y0 ((double) x);
66 }
67 # endif /* __DO_XSI_MATH__ */
68 #endif /* !defined __NO_LONG_DOUBLE_MATH */
69