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/*
* 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>
#include <stdio.h>
#define SOURCE {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}
static void drowfftshiftaTest(void){
int i=0;
double in[]=SOURCE;
double result5_6[30]={4,5,1,2,3,9,10,6,7,8,14,15,11,12,13,19,20,16,17,18,24,25,21,22,23,29,30,26,27,28};
double result6_5[30]={4,5,6,1,2,3,10,11,12,7,8,9,16,17,18,13,14,15,22,23,24,19,20,21,28,29,30,25,26,27};
double out[30];
drowfftshifta(in,5,6,out);
for (i=0;i<30;i++) assert( out[i]-result5_6[i]==0);
drowfftshifta(in,6,5,out);
for (i=0;i<30;i++) assert( out[i]-result6_5[i]==0);
}
static void zrowfftshiftaTest(void){
int i=0;
double inR[]=SOURCE;
double result5_6[30]={4,5,1,2,3,9,10,6,7,8,14,15,11,12,13,19,20,16,17,18,24,25,21,22,23,29,30,26,27,28};
double result6_5[30]={4,5,6,1,2,3,10,11,12,7,8,9,16,17,18,13,14,15,22,23,24,19,20,21,28,29,30,25,26,27};
doubleComplex out[30];
double ZEROS[30]={0};
doubleComplex *in;
in=DoubleComplexMatrix(inR,ZEROS,30);
zrowfftshifta(in,5,6,out);
for (i=0;i<30;i++) {
assert( zreals(out[i])-result5_6[i]==0);
assert( zimags(out[i])==0);
}
zrowfftshifta(in,6,5,out);
for (i=0;i<30;i++) {
assert( zreals(out[i])-result6_5[i]==0);
assert( zimags(out[i])==0);
}
}
static void dcolumnfftshiftaTest(void){
int i=0;
double in[]=SOURCE;
double result5_6[30]={16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
double result6_5[30]={19,20,21,22,23,24,25,26,27,28,29,30,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18};
double out[30];
dcolumnfftshifta(in,5,6,out);
for (i=0;i<30;i++) assert( out[i]-result5_6[i]==0);
dcolumnfftshifta(in,6,5,out);
for (i=0;i<30;i++) assert( out[i]-result6_5[i]==0);
}
static void zcolumnfftshiftaTest(void){
int i=0;
double inR[]=SOURCE;
double result5_6[30]={16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
double result6_5[30]={19,20,21,22,23,24,25,26,27,28,29,30,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18};
doubleComplex out[30];
double ZEROS[30]={0};
doubleComplex *in;
in=DoubleComplexMatrix(inR,ZEROS,30);
zcolumnfftshifta(in,5,6,out);
for (i=0;i<30;i++) {
assert( zreals(out[i])-result5_6[i]==0);
assert( zimags(out[i])==0);
}
zcolumnfftshifta(in,6,5,out);
for (i=0;i<30;i++) {
assert( zreals(out[i])-result6_5[i]==0);
assert( zimags(out[i])==0);
}
}
static void dfttshiftaTest(void){
int i=0;
double in[]=SOURCE;
double result5_6[30]={19,20,16,17,18,24,25,21,22,23,29,30,26,27,28,4,5,1,2,3,9,10,6,7,8,14,15,11,12,13};
double result6_5[30]={22,23,24,19,20,21,28,29,30,25,26,27,4,5,6,1,2,3,10,11,12,7,8,9,16,17,18,13,14,15};
double out[30];
dfftshifta(in,5,6,out);
for (i=0;i<30;i++) assert( out[i]-result5_6[i]==0);
dfftshifta(in,6,5,out);
for (i=0;i<30;i++) assert( out[i]-result6_5[i]==0);
}
static void zfftshiftaTest(void){
int i=0;
double inR[]=SOURCE;
double result5_6[30]={19,20,16,17,18,24,25,21,22,23,29,30,26,27,28,4,5,1,2,3,9,10,6,7,8,14,15,11,12,13};
double result6_5[30]={22,23,24,19,20,21,28,29,30,25,26,27,4,5,6,1,2,3,10,11,12,7,8,9,16,17,18,13,14,15};
doubleComplex out[30];
double ZEROS[30]={0};
doubleComplex *in;
in=DoubleComplexMatrix(inR,ZEROS,30);
zfftshifta(in,5,6,out);
for (i=0;i<30;i++) {
assert( zreals(out[i])-result5_6[i]==0);
assert( zimags(out[i])==0);
}
zfftshifta(in,6,5,out);
for (i=0;i<30;i++) {
assert( zreals(out[i])-result6_5[i]==0);
assert( zimags(out[i])==0);
}
}
static int FftShiftTest(void){
drowfftshiftaTest();
zrowfftshiftaTest();
dcolumnfftshiftaTest();
zcolumnfftshiftaTest();
dfttshiftaTest();
zfftshiftaTest();
return 0;
}
int main(void){
assert (FftShiftTest()==0);
return 0;
}
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