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| author | Tyge Løvset <[email protected]> | 2020-12-21 14:28:56 +0100 |
|---|---|---|
| committer | Tyge Løvset <[email protected]> | 2020-12-21 14:28:56 +0100 |
| commit | a9ce3df5c59515c12d4fcdf3b7ad43cefdf122b6 (patch) | |
| tree | fc4dd05322c03608dd3b756921380558965d1166 /benchmarks/crand_benchmark2.cpp | |
| parent | a6657b9f4b22afbdb1c98ce462d74665856a6f05 (diff) | |
| download | STC-modified-a9ce3df5c59515c12d4fcdf3b7ad43cefdf122b6.tar.gz STC-modified-a9ce3df5c59515c12d4fcdf3b7ad43cefdf122b6.zip | |
Added some benchmarks. Fix typo in cdeq.h
Diffstat (limited to 'benchmarks/crand_benchmark2.cpp')
| -rw-r--r-- | benchmarks/crand_benchmark2.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/benchmarks/crand_benchmark2.cpp b/benchmarks/crand_benchmark2.cpp new file mode 100644 index 00000000..3ae6f8ab --- /dev/null +++ b/benchmarks/crand_benchmark2.cpp @@ -0,0 +1,75 @@ +#include <stdio.h>
+#include <time.h>
+#include <stc/crand.h>
+#include <random>
+
+void test1(void)
+{
+ enum {N = 1000000000};
+ clock_t diff, before;
+ uint64_t sum;
+
+ std::random_device device;
+ std::mt19937 rng(device());
+ std::uniform_int_distribution<int> idist(1, 10);
+ std::uniform_real_distribution<double> fdist(1, 10);
+
+ before = clock();
+ sum = 0;
+ c_forrange (N) {
+ sum += rng();
+ }
+ diff = clock() - before;
+ printf("std::random:\t\t%.02f, %zu\n", (float) diff / CLOCKS_PER_SEC, sum);
+
+ before = clock();
+ sum = 0;
+ c_forrange (N) {
+ sum += idist(rng);
+ }
+ diff = clock() - before;
+ printf("std::uniform:\t\t%.02f, %zu\n\n", (float) diff / CLOCKS_PER_SEC, sum);
+
+ c_forrange (30) printf("%02zd ", idist(rng));
+ puts("");
+ c_forrange (8) printf("%f ", fdist(rng));
+ puts("\n");
+}
+
+void test2(void)
+{
+ enum {N = 1000000000};
+ clock_t diff, before;
+ uint64_t sum;
+
+ crand_t rng = crand_init(time(NULL));
+ crand_uniform_t idist = crand_uniform_init(1, 10);
+ crand_uniformf_t fdist = crand_uniformf_init(1, 10);
+
+ before = clock();
+ sum = 0;
+ c_forrange (N) {
+ sum += crand_next(&rng);
+ }
+ diff = clock() - before;
+ printf("crand_next:\t\t%.02f, %zu\n", (float) diff / CLOCKS_PER_SEC, sum);
+
+ before = clock();
+ sum = 0;
+ c_forrange (N) {
+ sum += crand_uniform(&rng, &idist);
+ }
+ diff = clock() - before;
+ printf("crand_uniform:\t\t%.02f, %zu\n\n", (float) diff / CLOCKS_PER_SEC, sum);
+
+ c_forrange (30) printf("%02zd ", crand_uniform(&rng, &idist));
+ puts("");
+ c_forrange (8) printf("%f ", crand_uniformf(&rng, &fdist));
+ puts("\n");
+}
+
+int main()
+{
+ test1();
+ test2();
+}
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