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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2008 - INRIA - Arnaud TORSET
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
*/
#include "fftshift.h"
#include <assert.h>
#define SOURCE {1,2,3,4,5,6,7,8,9,10,11,12}
static void srowfftshiftaTest(void){
int i=0;
float in[]=SOURCE;
float result3_4[12]={3,1,2,6,4,5,9,7,8,12,10,11};
float result4_3[12]={3,4,1,2,7,8,5,6,11,12,9,10};
float out[12];
srowfftshifta(in,3,4,out);
for (i=0;i<12;i++) assert( out[i]-result3_4[i]==0);
srowfftshifta(in,4,3,out);
for (i=0;i<12;i++) assert( out[i]-result4_3[i]==0);
}
static void crowfftshiftaTest(void){
int i=0;
float inR[]=SOURCE;
float result3_4[12]={3,1,2,6,4,5,9,7,8,12,10,11};
float result4_3[12]={3,4,1,2,7,8,5,6,11,12,9,10};
floatComplex out[12];
float ZEROS[12]={0};
floatComplex *in;
in=FloatComplexMatrix(inR,ZEROS,12);
crowfftshifta(in,3,4,out);
for (i=0;i<12;i++) {
assert( creals(out[i])-result3_4[i]==0);
assert( cimags(out[i])==0);
}
crowfftshifta(in,4,3,out);
for (i=0;i<12;i++) {
assert( creals(out[i])-result4_3[i]==0);
assert( cimags(out[i])==0);
}
}
static void scolumnfftshiftaTest(void){
int i=0;
float in[]=SOURCE;
float result3_4[12]={7,8,9,10,11,12,1,2,3,4,5,6};
float result4_3[12]={9,10,11,12,1,2,3,4,5,6,7,8};
float out[12];
scolumnfftshifta(in,3,4,out);
for (i=0;i<12;i++) assert( out[i]-result3_4[i]==0);
scolumnfftshifta(in,4,3,out);
for (i=0;i<12;i++) assert( out[i]-result4_3[i]==0);
}
static void ccolumnfftshiftaTest(void){
int i=0;
float inR[]=SOURCE;
float result3_4[12]={7,8,9,10,11,12,1,2,3,4,5,6};
float result4_3[12]={9,10,11,12,1,2,3,4,5,6,7,8};
floatComplex out[12];
float ZEROS[12]={0};
floatComplex *in;
in=FloatComplexMatrix(inR,ZEROS,12);
ccolumnfftshifta(in,3,4,out);
for (i=0;i<12;i++) {
assert( creals(out[i])-result3_4[i]==0);
assert( cimags(out[i])==0);
}
ccolumnfftshifta(in,4,3,out);
for (i=0;i<12;i++) {
assert( creals(out[i])-result4_3[i]==0);
assert( cimags(out[i])==0);
}
}
static void sfftshiftaTest(void){
int i=0;
float in[]=SOURCE;
float result3_4[12]={9,7,8,12,10,11,3,1,2,6,4,5};
float result4_3[12]={11,12,9,10,3,4,1,2,7,8,5,6};
float out[12];
sfftshifta(in,3,4,out);
for (i=0;i<12;i++) assert( out[i]-result3_4[i]==0);
sfftshifta(in,4,3,out);
for (i=0;i<12;i++) assert( out[i]-result4_3[i]==0);
}
static void cfftshiftaTest(void){
int i=0;
float inR[]=SOURCE;
float result3_4[12]={9,7,8,12,10,11,3,1,2,6,4,5};
float result4_3[12]={11,12,9,10,3,4,1,2,7,8,5,6};
floatComplex out[12];
float ZEROS[12]={0};
floatComplex *in;
in=FloatComplexMatrix(inR,ZEROS,12);
cfftshifta(in,3,4,out);
for (i=0;i<12;i++) {
assert( creals(out[i])-result3_4[i]==0);
assert( cimags(out[i])==0);
}
cfftshifta(in,4,3,out);
for (i=0;i<12;i++) {
assert( creals(out[i])-result4_3[i]==0);
assert( cimags(out[i])==0);
}
}
static int FftShiftTest(void){
srowfftshiftaTest();
crowfftshiftaTest();
scolumnfftshiftaTest();
ccolumnfftshiftaTest();
sfftshiftaTest();
cfftshiftaTest();
return 0;
}
int main(void){
assert (FftShiftTest()==0);
return 0;
}
|
