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#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
#include <complex.h>
#include "SIMDBase.h"
#include "DFT.h"
typedef float REAL;
#define TYPE SIMDBase_TYPE_FLOAT
#define THRES 1e-3
double complex omega(double n, double kn) {
return cexp((-2 * M_PI * _Complex_I / n) * kn);
}
void forward(double complex *ts, double complex *fs, int len) {
int k, n;
for(k=0;k<len;k++) {
fs[k] = 0;
for(n=0;n<len;n++) {
fs[k] += ts[n] * omega(len, n*k);
}
}
}
int main(int argc, char **argv) {
const int n = 256;
int mode = SIMDBase_chooseBestMode(TYPE);
printf("mode : %d, %s\n", mode, SIMDBase_getModeParamString(SIMDBase_PARAMID_MODE_NAME, mode));
int veclen = SIMDBase_getModeParamInt(SIMDBase_PARAMID_VECTOR_LEN, mode);
int sizeOfVect = SIMDBase_getModeParamInt(SIMDBase_PARAMID_SIZE_OF_VECT, mode);
//
int i, j;
DFT *p = DFT_init(mode, n, 0);
REAL *sx = SIMDBase_alignedMalloc(sizeOfVect*n*2);
//
double complex ts[veclen][n], fs[veclen][n];
for(j=0;j<veclen;j++) {
for(i=0;i<n;i++) {
ts[j][i] = (random() / (double)RAND_MAX) + (random() / (double)RAND_MAX) * _Complex_I;
sx[(i*2+0)*veclen+j] = creal(ts[j][i]);
sx[(i*2+1)*veclen+j] = cimag(ts[j][i]);
}
}
//
DFT_execute(p, mode, sx, -1);
for(j=0;j<veclen;j++) {
forward(ts[j], fs[j], n);
}
//
int success = 1;
for(j=0;j<veclen;j++) {
for(i=0;i<n;i++) {
if ((fabs(sx[(i*2+0)*veclen+j] - creal(fs[j][i])) > THRES) ||
(fabs(sx[(i*2+1)*veclen+j] - cimag(fs[j][i])) > THRES)) {
success = 0;
}
}
}
printf("%s\n", success ? "OK" : "NG");
//
SIMDBase_alignedFree(sx);
DFT_dispose(p, mode);
exit(0);
}
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