bench: add rand_dist int benchmarks

Author: iboB

test/b-rand_dist.cpp

@@ -22,6 +22,17 @@ struct mean {
     }
 };
 
+template <typename Rng, typename Dist>
+void bench_int_dist(picobench::state& s) {
+    Rng rng(9857);
+    Dist dist(-100, 100);
+    mean m;
+    for (uauto _ : s) {
+        m += dist(rng);
+    }
+    s.set_result(m.get(10));
+}
+
 template <typename Rng, typename Dist>
 void bench_real_dist(picobench::state& s) {
     Rng rng(12345);
@@ -55,25 +66,53 @@ void bench_std_real_dist_01(picobench::state& s) {
 }
 
 template <typename T>
-struct dist {
-    using fast = itlib::fast_uniform_real_distribution<T>;
-    using std = std::uniform_real_distribution<T>;
-};
+using int_itlib = itlib::uniform_int_distribution<T>;
+template <typename T>
+using int_std = std::uniform_int_distribution<T>;
+template <typename T>
+using real_fast = itlib::fast_uniform_real_distribution<T>;
+template <typename T>
+using real_std = std::uniform_real_distribution<T>;
+
+template <typename Rng>
+void add_int_benchmarks(picobench::local_runner& r) {
+    r.add_benchmark("itlib int32", bench_int_dist<Rng, int_itlib<int32_t>>);
+    r.add_benchmark("std int32", bench_int_dist<Rng, int_std<int32_t>>);
+    r.add_benchmark("itlib int64", bench_int_dist<Rng, int_itlib<int64_t>>);
+    r.add_benchmark("std int64", bench_int_dist<Rng, int_std<int64_t>>);
+}
+
+template <typename Rng>
+void add_real_benchmarks(picobench::local_runner& r) {
+    r.add_benchmark("fast float", bench_real_dist<Rng, real_fast<float>>);
+    r.add_benchmark("fast double", bench_real_dist<Rng, real_fast<double>>);
+    r.add_benchmark("std float", bench_real_dist<Rng, real_std<float>>);
+    r.add_benchmark("std double", bench_real_dist<Rng, real_std<double>>);
+}
 
 int main(int argc, char* argv[]) {
     picobench::local_runner r;
 
+    r.set_suite("int dist mt19937");
+    add_int_benchmarks<std::mt19937>(r);
+
+    r.set_suite("int dist minstd_rand");
+    add_int_benchmarks<std::minstd_rand>(r);
+
     r.set_suite("real dist mt19937");
-    r.add_benchmark("fast float", bench_real_dist<std::mt19937, dist<float>::fast>);
-    r.add_benchmark("fast double", bench_real_dist<std::mt19937, dist<double>::fast>);
-    r.add_benchmark("std float", bench_real_dist<std::mt19937, dist<float>::std>);
-    r.add_benchmark("std double", bench_real_dist<std::mt19937, dist<double>::std>);
+    add_real_benchmarks<std::mt19937>(r);
 
     r.set_suite("real dist mt19937 01");
-    r.add_benchmark("fast float 01", bench_real_dist_01<std::mt19937, dist<float>::fast>);
-    r.add_benchmark("fast double 01", bench_real_dist_01<std::mt19937, dist<double>::fast>);
-    r.add_benchmark("std float 01", bench_std_real_dist_01<std::mt19937, float>);
-    r.add_benchmark("std double 01", bench_std_real_dist_01<std::mt19937, double>);
+    r.add_benchmark("fast float", bench_real_dist_01<std::mt19937, real_fast<float>>);
+    r.add_benchmark("fast double", bench_real_dist_01<std::mt19937, real_fast<double>>);
+    r.add_benchmark("std float", bench_std_real_dist_01<std::mt19937, float>);
+    r.add_benchmark("std double", bench_std_real_dist_01<std::mt19937, double>);
+
+    r.set_suite("real dist mt19937_64");
+    add_real_benchmarks<std::mt19937_64>(r);
+
+    r.set_suite("real dist minstd_rand");
+    add_real_benchmarks<std::minstd_rand>(r);
 
     r.set_compare_results_across_samples(true);
     r.set_compare_results_across_benchmarks(true);