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| author | _Tradam <[email protected]> | 2023-09-08 01:29:47 +0000 |
|---|---|---|
| committer | GitHub <[email protected]> | 2023-09-08 01:29:47 +0000 |
| commit | 3c76c7f3d5db3f9586a90d03f8fbb02d79de9acd (patch) | |
| tree | afbe4b540967223911f7c5de36559b82154f02f3 /misc/examples/random.c | |
| parent | 0841165881871ee01b782129be681209aeed2423 (diff) | |
| parent | 1a72205fe05c2375cfd380dd8381a8460d9ed8d1 (diff) | |
| download | STC-modified-modified.tar.gz STC-modified-modified.zip | |
Diffstat (limited to 'misc/examples/random.c')
| -rw-r--r-- | misc/examples/random.c | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/misc/examples/random.c b/misc/examples/random.c deleted file mode 100644 index ea9c483e..00000000 --- a/misc/examples/random.c +++ /dev/null @@ -1,45 +0,0 @@ -#include <stdio.h> -#include <time.h> -#include <stc/crand.h> - -int main() -{ - const size_t N = 1000000000; - const uint64_t seed = (uint64_t)time(NULL), range = 1000000; - crand_t rng = crand_init(seed); - - int64_t sum; - clock_t diff, before; - - printf("Compare speed of full and unbiased ranged random numbers...\n"); - sum = 0; - before = clock(); - c_forrange (N) { - sum += (uint32_t)crand_u64(&rng); - } - diff = clock() - before; - printf("full range\t\t: %f secs, %" c_ZI ", avg: %f\n", - (float)diff / CLOCKS_PER_SEC, N, (float)sum / (float)N); - - crand_unif_t dist1 = crand_unif_init(0, range); - rng = crand_init(seed); - sum = 0; - before = clock(); - c_forrange (N) { - sum += crand_unif(&rng, &dist1); // unbiased - } - diff = clock() - before; - printf("unbiased 0-%" PRIu64 "\t: %f secs, %" c_ZI ", avg: %f\n", - range, (float)diff/CLOCKS_PER_SEC, N, (float)sum / (float)N); - - sum = 0; - rng = crand_init(seed); - before = clock(); - c_forrange (N) { - sum += (int64_t)(crand_u64(&rng) % (range + 1)); // biased - } - diff = clock() - before; - printf("biased 0-%" PRIu64 " \t: %f secs, %" c_ZI ", avg: %f\n", - range, (float)diff / CLOCKS_PER_SEC, N, (float)sum / (float)N); - -} |
