blob: 9902a02edd2363dfee91c6a02b4e996d620d7606 (
plain) (
blame)
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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/* Return cosine of complex long double value.
Copyright (C) 1997, 2011 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <complex.h>
#include <fenv.h>
#include <math.h>
#include <math_private.h>
__complex__ long double
__ccosl (__complex__ long double x)
{
__complex__ long double res;
if (!isfinite (__real__ x) || __isnanl (__imag__ x))
{
if (__real__ x == 0.0 || __imag__ x == 0.0)
{
__real__ res = __nanl ("");
__imag__ res = 0.0;
#ifdef FE_INVALID
if (__isinf_nsl (__real__ x))
feraiseexcept (FE_INVALID);
#endif
}
else if (__isinf_nsl (__imag__ x))
{
__real__ res = HUGE_VALL;
__imag__ res = __nanl ("");
#ifdef FE_INVALID
if (__isinf_nsl (__real__ x))
feraiseexcept (FE_INVALID);
#endif
}
else
{
__real__ res = __nanl ("");
__imag__ res = __nanl ("");
#ifdef FE_INVALID
if (isfinite (__imag__ x))
feraiseexcept (FE_INVALID);
#endif
}
}
else
{
__complex__ long double y;
__real__ y = -__imag__ x;
__imag__ y = __real__ x;
res = __ccoshl (y);
}
return res;
}
weak_alias (__ccosl, ccosl)
|
