blob: 67d22de694c99bd9c4b09afd697bb2a67f580f66 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/* Copyright (C) 2011-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/*
* wrapper atan2l(y,x)
*/
#include <errno.h>
#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>
#include <libm-alias-ldouble.h>
#if LIBM_SVID_COMPAT
long double
__atan2l (long double y, long double x)
{
long double z;
if (__builtin_expect (x == 0.0L && y == 0.0L, 0) && _LIB_VERSION == _SVID_)
return __kernel_standard_l (y, x, 203); /* atan2(+-0,+-0) */
z = __ieee754_atan2l (y, x);
if (__glibc_unlikely (z == 0.0L && y != 0.0L && isfinite (x)))
__set_errno (ERANGE);
return z;
}
libm_alias_ldouble (__atan2, atan2)
#endif
|
