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 jnf */ |
25 | float |
26 | jnf (int n, float x) |
27 | { |
28 | if (__builtin_expect (isgreater (fabsf (x), (float) X_TLOSS), 0) |
29 | && _LIB_VERSION != _IEEE_ && _LIB_VERSION != _POSIX_) |
30 | /* jn(n,|x|>X_TLOSS) */ |
31 | return __kernel_standard_f (n, x, 138); |
32 | |
33 | return __ieee754_jnf (n, x); |
34 | } |
35 | |
36 | |
37 | /* wrapper ynf */ |
38 | float |
39 | ynf (int n, float x) |
40 | { |
41 | if (__builtin_expect (islessequal (x, 0.0f) |
42 | || isgreater (x, (float) X_TLOSS), 0) |
43 | && _LIB_VERSION != _IEEE_) |
44 | { |
45 | if (x < 0.0f) |
46 | { |
47 | /* d = zero/(x-x) */ |
48 | feraiseexcept (FE_INVALID); |
49 | return __kernel_standard_f (n, x, 113); |
50 | } |
51 | else if (x == 0.0) |
52 | { |
53 | /* d = -one/(x-x) */ |
54 | feraiseexcept (FE_DIVBYZERO); |
55 | return __kernel_standard_f (n, x, 112); |
56 | } |
57 | else if (_LIB_VERSION != _POSIX_) |
58 | /* yn(n,x>X_TLOSS) */ |
59 | return __kernel_standard_f (n, x, 139); |
60 | } |
61 | |
62 | return __ieee754_ynf (n, x); |
63 | } |
64 | |