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-rw-r--r--rand/benches/distributions/exponential.rs18
-rw-r--r--rand/benches/distributions/gamma.rs31
-rw-r--r--rand/benches/distributions/mod.rs3
-rw-r--r--rand/benches/distributions/normal.rs18
4 files changed, 70 insertions, 0 deletions
diff --git a/rand/benches/distributions/exponential.rs b/rand/benches/distributions/exponential.rs
new file mode 100644
index 0000000..152615d
--- /dev/null
+++ b/rand/benches/distributions/exponential.rs
@@ -0,0 +1,18 @@
+use std::mem::size_of;
+use test::Bencher;
+use rand;
+use rand::distributions::exponential::Exp;
+use rand::distributions::Sample;
+
+#[bench]
+fn rand_exp(b: &mut Bencher) {
+ let mut rng = rand::weak_rng();
+ let mut exp = Exp::new(2.71828 * 3.14159);
+
+ b.iter(|| {
+ for _ in 0..::RAND_BENCH_N {
+ exp.sample(&mut rng);
+ }
+ });
+ b.bytes = size_of::<f64>() as u64 * ::RAND_BENCH_N;
+}
diff --git a/rand/benches/distributions/gamma.rs b/rand/benches/distributions/gamma.rs
new file mode 100644
index 0000000..bf3fd36
--- /dev/null
+++ b/rand/benches/distributions/gamma.rs
@@ -0,0 +1,31 @@
+use std::mem::size_of;
+use test::Bencher;
+use rand;
+use rand::distributions::IndependentSample;
+use rand::distributions::gamma::Gamma;
+
+#[bench]
+fn bench_gamma_large_shape(b: &mut Bencher) {
+ let gamma = Gamma::new(10., 1.0);
+ let mut rng = rand::weak_rng();
+
+ b.iter(|| {
+ for _ in 0..::RAND_BENCH_N {
+ gamma.ind_sample(&mut rng);
+ }
+ });
+ b.bytes = size_of::<f64>() as u64 * ::RAND_BENCH_N;
+}
+
+#[bench]
+fn bench_gamma_small_shape(b: &mut Bencher) {
+ let gamma = Gamma::new(0.1, 1.0);
+ let mut rng = rand::weak_rng();
+
+ b.iter(|| {
+ for _ in 0..::RAND_BENCH_N {
+ gamma.ind_sample(&mut rng);
+ }
+ });
+ b.bytes = size_of::<f64>() as u64 * ::RAND_BENCH_N;
+}
diff --git a/rand/benches/distributions/mod.rs b/rand/benches/distributions/mod.rs
new file mode 100644
index 0000000..49f6bd9
--- /dev/null
+++ b/rand/benches/distributions/mod.rs
@@ -0,0 +1,3 @@
+mod exponential;
+mod normal;
+mod gamma;
diff --git a/rand/benches/distributions/normal.rs b/rand/benches/distributions/normal.rs
new file mode 100644
index 0000000..1c858b1
--- /dev/null
+++ b/rand/benches/distributions/normal.rs
@@ -0,0 +1,18 @@
+use std::mem::size_of;
+use test::Bencher;
+use rand;
+use rand::distributions::Sample;
+use rand::distributions::normal::Normal;
+
+#[bench]
+fn rand_normal(b: &mut Bencher) {
+ let mut rng = rand::weak_rng();
+ let mut normal = Normal::new(-2.71828, 3.14159);
+
+ b.iter(|| {
+ for _ in 0..::RAND_BENCH_N {
+ normal.sample(&mut rng);
+ }
+ });
+ b.bytes = size_of::<f64>() as u64 * ::RAND_BENCH_N;
+}