blob: 261b18cb3aa84dac386d7b955c3e1eff1297c5c4 (
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
78
|
/* Return value of complex exponential function for float complex value.
Copyright (C) 1997 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <complex.h>
#include <math.h>
__complex__ float
__cexpf (__complex__ float x)
{
__complex__ float retval;
if (isfinite (__real__ x))
{
if (isfinite (__imag__ x))
{
float exp_val = __expf (__real__ x);
__real__ retval = exp_val * __cosf (__imag__ x);
__imag__ retval = exp_val * __sinf (__imag__ x);
}
else
{
/* If the imaginary part is +-inf or NaN and the real part
is not +-inf the result is NaN + iNaN. */
__real__ retval = __nanf ("");
__imag__ retval = __nanf ("");
}
}
else if (__isinff (__real__ x))
{
if (isfinite (__imag__ x))
{
if (signbit (__real__ x) == 0 && __imag__ x == 0.0)
retval = HUGE_VALF;
else
{
float value = signbit (__real__ x) ? 0.0 : HUGE_VALF;
__real__ retval = value * __cosf (__imag__ x);
__imag__ retval = value * __sinf (__imag__ x);
}
}
else if (signbit (__real__ x) == 0)
{
__real__ retval = HUGE_VALF;
__imag__ retval = __nanf ("");
}
else
retval = 0.0;
}
else
{
/* If the real part is NaN the result is NaN + iNan. */
__real__ retval = __nanf ("");
__imag__ retval = __nanf ("");
}
return retval;
}
weak_alias (__cexpf, cexpf)
|
