blob: 6604b5aec6eaef0a3704c832dac3c6dc9467dc40 (
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
|
/* Return cosine of complex double value.
Copyright (C) 1997-2013 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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
<http://www.gnu.org/licenses/>. */
#include <complex.h>
#include <math.h>
__complex__ double
__cacos (__complex__ double x)
{
__complex__ double y;
__complex__ double res;
y = __casin (x);
__real__ res = (double) M_PI_2 - __real__ y;
__imag__ res = -__imag__ y;
return res;
}
weak_alias (__cacos, cacos)
#ifdef NO_LONG_DOUBLE
strong_alias (__cacos, __cacosl)
weak_alias (__cacos, cacosl)
#endif
|
