1 //
2 // wdelayf_example.c
3 //
4 // SEE ALSO: bufferf_example.c
5 // windowf_example.c
6
7 #include <stdio.h>
8
9 #include "liquid.h"
10
11 #define OUTPUT_FILENAME "wdelayf_example.m"
12
main()13 int main() {
14 unsigned int delay = 10;
15 unsigned int num_samples = 64;
16
17 // create wdelay, all elements initialized to 0
18 wdelayf w = wdelayf_create(delay);
19 float y; // output
20
21 FILE * fid = fopen(OUTPUT_FILENAME,"w");
22 fprintf(fid,"%% %s : auto-generated file\n", OUTPUT_FILENAME);
23 fprintf(fid,"clear all;\n");
24 fprintf(fid,"close all;\n");
25 fprintf(fid,"num_samples = %u;\n", num_samples);
26 fprintf(fid,"delay = %u;\n", delay);
27
28 // push several elements
29 unsigned int i;
30 float x;
31 for (i=0; i<num_samples; i++) {
32 if (i==0) x = 1.0f;
33 else x = 0.0f;
34
35 wdelayf_push(w, x);
36 wdelayf_read(w, &y);
37
38 printf("%4u : %12.8f\n", i, y);
39 fprintf(fid,"x(%4u) = %12.8f; y(%4u) = %12.8f;\n", i+1, x, i+1, y);
40 }
41 wdelayf_print(w);
42
43 fprintf(fid,"\n\n");
44 fprintf(fid,"t = 0:(num_samples-1);\n");
45 fprintf(fid,"figure;\n");
46 fprintf(fid,"plot(t,x,t,y);\n");
47 fclose(fid);
48 printf("results written to %s.\n", OUTPUT_FILENAME);
49
50 // clean it up
51 wdelayf_destroy(w);
52
53 printf("done.\n");
54 return 0;
55 }
56
57
58