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bfff8b1b | 1 | /* Copyright (C) 2011-2017 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gmail.com>, 2011. | |
ee188d55 | 4 | |
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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. | |
ee188d55 | 9 | |
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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 | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
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18 | |
19 | /* | |
20 | * wrapper atan2l(y,x) | |
21 | */ | |
22 | ||
54fa2475 | 23 | #include <errno.h> |
9d13fb24 | 24 | #include <math.h> |
9277c064 | 25 | #include <math_private.h> |
813378e9 | 26 | #include <math-svid-compat.h> |
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27 | |
28 | ||
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29 | long double |
30 | __atan2l (long double y, long double x) | |
ee188d55 | 31 | { |
54fa2475 JM |
32 | long double z; |
33 | ||
0ac5ae23 | 34 | if (__builtin_expect (x == 0.0L && y == 0.0L, 0) && _LIB_VERSION == _SVID_) |
41bf21a1 | 35 | return __kernel_standard_l (y, x, 203); /* atan2(+-0,+-0) */ |
0ac5ae23 | 36 | |
54fa2475 | 37 | z = __ieee754_atan2l (y, x); |
d81f90cc | 38 | if (__glibc_unlikely (z == 0.0L && y != 0.0L && isfinite (x))) |
54fa2475 JM |
39 | __set_errno (ERANGE); |
40 | return z; | |
ee188d55 RM |
41 | } |
42 | weak_alias (__atan2l, atan2l) |