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
|
/* complex.h: Declarations for complex.c
Copyright 2003 Bjoern Butscher, Hendrik Weimer
This file is part of libquantum
libquantum is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
libquantum 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with libquantum; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA
*/
#ifndef __COMPLEX_H
#define __COMPLEX_H
#include "config.h"
extern COMPLEX_FLOAT quantum_conj(COMPLEX_FLOAT a);
extern float quantum_prob (COMPLEX_FLOAT a);
extern COMPLEX_FLOAT quantum_cexp(float phi);
/* Return the real part of a complex number */
static inline float
quantum_real(COMPLEX_FLOAT a)
{
float *p = (float *) &a;
return p[0];
}
/* Return the imaginary part of a complex number */
static inline float
quantum_imag(COMPLEX_FLOAT a)
{
float *p = (float *) &a;
return p[1];
}
/* Calculate the square of a complex number (i.e. the probability) */
static inline float
quantum_prob_inline(COMPLEX_FLOAT a)
{
float r, i;
r = quantum_real(a);
i = quantum_imag(a);
return r * r + i * i;
}
#endif
|
