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 <fenv.h> |
20 | #include <math.h> |
21 | #include <math_private.h> |
22 | |
23 | |
24 | /* wrapper j0 */ |
25 | double |
26 | j0 (double x) |
27 | { |
28 | if (__builtin_expect (isgreater (fabs (x), X_TLOSS), 0) |
29 | && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_) |
30 | /* j0(|x|>X_TLOSS) */ |
31 | return __kernel_standard (x, x, 34); |
32 | |
33 | return __ieee754_j0 (x); |
34 | } |
35 | #ifdef NO_LONG_DOUBLE |
36 | weak_alias (j0, j0l) |
37 | #endif |
38 | |
39 | |
40 | /* wrapper y0 */ |
41 | double |
42 | y0 (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 (x, x, 9); |
52 | } |
53 | else if (x == 0.0) |
54 | { |
55 | /* d = -one/(x-x) */ |
56 | __feraiseexcept (FE_DIVBYZERO); |
57 | return __kernel_standard (x, x, 8); |
58 | } |
59 | else if (_LIB_VERSION != _POSIX_) |
60 | /* y0(x>X_TLOSS) */ |
61 | return __kernel_standard (x, x, 35); |
62 | } |
63 | |
64 | return __ieee754_y0 (x); |
65 | } |
66 | #ifdef NO_LONG_DOUBLE |
67 | weak_alias (y0, y0l) |
68 | #endif |
69 | |