]>
Commit | Line | Data |
---|---|---|
688903eb | 1 | /* Copyright (C) 2011-2018 Free Software Foundation, Inc. |
0ac5ae23 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gmail.com>, 2011. | |
f7eac6eb | 4 | |
0ac5ae23 UD |
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. | |
f7eac6eb | 9 | |
0ac5ae23 UD |
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/>. */ | |
f7eac6eb | 18 | |
0d8733c4 | 19 | /* |
f7eac6eb RM |
20 | * wrapper atan2f(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> |
5bcdb315 | 27 | #include <libm-alias-float.h> |
f7eac6eb RM |
28 | |
29 | ||
4f3647e4 | 30 | #if LIBM_SVID_COMPAT |
0ac5ae23 UD |
31 | float |
32 | __atan2f (float y, float x) | |
f7eac6eb | 33 | { |
54fa2475 JM |
34 | float z; |
35 | ||
0ac5ae23 UD |
36 | if (__builtin_expect (x == 0.0f && y == 0.0f, 0) && _LIB_VERSION == _SVID_) |
37 | return __kernel_standard_f (y, x, 103); /* atan2(+-0,+-0) */ | |
38 | ||
54fa2475 | 39 | z = __ieee754_atan2f (y, x); |
d81f90cc | 40 | if (__glibc_unlikely (z == 0.0f && y != 0.0f && isfinite (x))) |
54fa2475 JM |
41 | __set_errno (ERANGE); |
42 | return z; | |
f7eac6eb | 43 | } |
5bcdb315 | 44 | libm_alias_float (__atan2, atan2) |
4f3647e4 | 45 | #endif |