baud

commit

f52b480

parent

c573931

author

Neale Pickett

date

2024-01-22 16:26:38 -0700 MST

Use better PRNG

 1@@ -55,9 +55,6 @@ main(int argc, char *argv[]) {
 2         noiselen = atoi(argv[3]);
 3     }
 4 
 5-    // In musl, the first value is 0
 6-    rand();
 7-
 8     int cps = baud / 10; // 8N1 has 10 bits per octet: 8 data, 1 start, 1 parity
 9     int delay = SECOND / cps;
10     int noisybits = 0;
11@@ -65,9 +62,9 @@ main(int argc, char *argv[]) {
12     while ((c = getchar()) != EOF) {
13         usleep(delay);
14         for (int bit = 0; bit < 8; bit++) {
15-            int r = rand() % NOISINESS_DENOMINATOR;
16+            int r = random() % NOISINESS_DENOMINATOR;
17             if (r < noisiness) {
18-                noisybits = rand() % noiselen;
19+                noisybits = random() % noiselen;
20             }
21 
22             if (noisybits) {