Move library tree where it belongs

2026-04-27 00:07:17 +02:00 · 2010-01-24 09:19:39 +00:00
parent e74978ba77
commit 58caf78a86
6020 changed files with 2790154 additions and 0 deletions
--- a/lib-src/libnyquist/nyquist/ffts/Matlab-testing/conv2dTest.c
+++ b/lib-src/libnyquist/nyquist/ffts/Matlab-testing/conv2dTest.c
@@ -0,0 +1,116 @@
+/*  A program to test fast 2d real convolution	*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <fp.h>
+#include <math.h>
+#include "fftlib.h"
+#include "fftext.h"
+#include "fft2d.h"
+
+#if macintosh
+#include <timer.h>
+#endif
+
+#define	BIPRAND(a) (2.0/(RAND_MAX+1.0)*a-1.0)
+//#define	BIPRAND(a) round(100*(2.0/(RAND_MAX+1.0)*a-1.0))
+
+void main(){
+long 	N = 256;	/* the number of cols in 2d ffts, must be power of 2 */
+long 	N2 = 64;	/* the number of rows in 2d ffts, must be power of 2 */
+long 	kernSize = 53;	/* kernal cols must be less than N */
+long 	kernSize2 = 29;	/* kernal rows must be less than N2*/
+long 	dataSize = N-kernSize+1;	/* data cols */
+long 	dataSize2 = N2-kernSize2+1;	/* data rows */
+float	*a;
+float	*b;
+long 	i1;
+long 	i2;
+long 	TheErr;
+long		M;
+long		M2;
+
+FILE *fdataout;				/* output file */
+
+unsigned int	randseed = 777;
+int		rannum;
+#if macintosh
+	UnsignedWide 		TheTime1;
+	Microseconds(&TheTime1);
+	randseed = TheTime1.lo;
+#endif
+
+printf(" %6d  Byte Floats \n", sizeof(a[0]));
+printf(" randseed = %10u\n", randseed);
+
+srand(randseed);
+M = roundtol(LOG2(N));
+N = POW2(M);
+M2 = roundtol(LOG2(N2));
+N2 = POW2(M2);
+
+printf("fft size = %6d X%6d,  ", N2, N);
+
+if ((dataSize <= 0)||(dataSize2 <= 0)) TheErr = 22;
+else TheErr = 0;
+
+if(!TheErr){
+	TheErr = fft2dInit(M2, M);
+}
+
+a = (float *) calloc(N2*N,sizeof(float) );	// calloc to zero pad data to fill N to N2
+if (a == 0) TheErr = 2;
+if(!TheErr){
+	b = (float *) calloc(N2*N,sizeof(float) );	// calloc to zero pad data to fill N to N2
+	if (b == 0) TheErr = 2;
+}
+if(!TheErr){
+	fdataout = fopen("conv2ddat.c2d", "wb");
+	if (fdataout == NULL) TheErr = -50;
+}
+if(!TheErr){
+
+		/*  write sizes to fdataout */
+	fwrite(&dataSize, sizeof(dataSize), 1, fdataout);
+	fwrite(&dataSize2, sizeof(dataSize2), 1, fdataout);
+	fwrite(&kernSize, sizeof(kernSize), 1, fdataout);
+	fwrite(&kernSize2, sizeof(kernSize2), 1, fdataout);
+		/*  set up a simple test case and write to fdataout */
+	for (i2=0; i2<dataSize2; i2++){
+		for (i1=0; i1<dataSize; i1++){
+			rannum = rand();
+			a[i2*N+i1] = BIPRAND(rannum);
+		}
+		fwrite(&a[i2*N], dataSize*sizeof(float), 1, fdataout);
+	}
+	for (i2=0; i2<kernSize2; i2++){
+		for (i1=0; i1<kernSize; i1++){
+			rannum = rand();
+			b[i2*N+i1] = BIPRAND(rannum);
+		}
+		fwrite(&b[i2*N], kernSize*sizeof(float), 1, fdataout);
+	}
+
+	/* fast 2d convolution of zero padded sequences */
+	rfft2d(a, M2, M);
+	rfft2d(b, M2, M);
+	rspect2dprod(a, b, a, N2, N);
+	rifft2d(a, M2, M);
+
+	/* write out answer */
+	fwrite(a, N2*N*sizeof(float), 1, fdataout);
+
+	fclose(fdataout);
+
+	free(b);
+	free(a);
+	fft2dFree();
+}
+else{
+	if(TheErr==2)	printf(" out of memory \n");
+	else	printf(" error \n");
+	fft2dFree();
+}
+printf(" Done. \n");
+return;
+}