8 #include "../lib/types.h"
10 #include "../lib/lfsr.h"
11 #include "../lib/axmap.h"
12 #include "../smalloc.h"
13 #include "../minmax.h"
14 #include "../lib/rand.h"
16 int main(int argc, char *argv[])
19 uint64_t i, start, end, nvalues;
20 unsigned long *buckets, index, pass, fail;
21 double p, dev, mean, vmin, vmax;
24 log_err("%s: start end nvalues\n", argv[0]);
28 start = strtoul(argv[1], NULL, 10);
29 end = strtoul(argv[2], NULL, 10);
32 log_err("%s: start must be smaller than end\n", argv[0]);
35 index = 1 + end - start;
36 buckets = calloc(index, sizeof(unsigned long));
38 nvalues = strtoul(argv[3], NULL, 10);
42 for (i = 0; i < nvalues; i++) {
43 int v = rand32_between(&s, start, end);
49 dev = sqrt(nvalues * p * (1.0 - p));
55 for (i = 0; i < index; i++) {
56 if (buckets[i] < vmin || buckets[i] > vmax) {
57 printf("FAIL bucket%4lu: val=%8lu (%.1f < %.1f > %.1f)\n", (unsigned long) i + 1, buckets[i], vmin, mean, vmax);
60 printf("PASS bucket%4lu: val=%8lu (%.1f < %.1f > %.1f)\n", (unsigned long) i + 1, buckets[i], vmin, mean, vmax);
65 printf("Passes=%lu, Fail=%lu\n", pass, fail);