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authorDaniel Mueller <deso@posteo.net>2020-01-02 08:32:06 -0800
committerDaniel Mueller <deso@posteo.net>2020-01-02 08:32:06 -0800
commitfd091b04316db9dc5fafadbd6bdbe60b127408a9 (patch)
treef202270f7ae5cedc513be03833a26148d9b5e219 /rand/rand_distr/tests
parent8161cdb26f98e65b39c603ddf7a614cc87c77a1c (diff)
downloadnitrocli-fd091b04316db9dc5fafadbd6bdbe60b127408a9.tar.gz
nitrocli-fd091b04316db9dc5fafadbd6bdbe60b127408a9.tar.bz2
Update nitrokey crate to 0.4.0
This change finally updates the version of the nitrokey crate that we consume to 0.4.0. Along with that we update rand_core, one of its dependencies, to 0.5.1. Further more we add cfg-if in version 0.1.10 and getrandom in version 0.1.13, both of which are now new (non-development) dependencies. Import subrepo nitrokey/:nitrokey at e81057037e9b4f370b64c0a030a725bc6bdfb870 Import subrepo cfg-if/:cfg-if at 4484a6faf816ff8058088ad857b0c6bb2f4b02b2 Import subrepo getrandom/:getrandom at d661aa7e1b8cc80b47dabe3d2135b3b47d2858af Import subrepo rand/:rand at d877ed528248b52d947e0484364a4e1ae59ca502
Diffstat (limited to 'rand/rand_distr/tests')
-rw-r--r--rand/rand_distr/tests/uniformity.rs59
1 files changed, 59 insertions, 0 deletions
diff --git a/rand/rand_distr/tests/uniformity.rs b/rand/rand_distr/tests/uniformity.rs
new file mode 100644
index 0000000..d0d9d97
--- /dev/null
+++ b/rand/rand_distr/tests/uniformity.rs
@@ -0,0 +1,59 @@
+// Copyright 2018 Developers of the Rand project.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use average::Histogram;
+use rand::prelude::*;
+
+const N_BINS: usize = 100;
+const N_SAMPLES: u32 = 1_000_000;
+const TOL: f64 = 1e-3;
+average::define_histogram!(hist, 100);
+use hist::Histogram as Histogram100;
+
+#[test]
+fn unit_sphere() {
+ const N_DIM: usize = 3;
+ let h = Histogram100::with_const_width(-1., 1.);
+ let mut histograms = [h.clone(), h.clone(), h];
+ let dist = rand_distr::UnitSphere;
+ let mut rng = rand_pcg::Pcg32::from_entropy();
+ for _ in 0..N_SAMPLES {
+ let v: [f64; 3] = dist.sample(&mut rng);
+ for i in 0..N_DIM {
+ histograms[i].add(v[i]).map_err(
+ |e| { println!("v: {}", v[i]); e }
+ ).unwrap();
+ }
+ }
+ for h in &histograms {
+ let sum: u64 = h.bins().iter().sum();
+ println!("{:?}", h);
+ for &b in h.bins() {
+ let p = (b as f64) / (sum as f64);
+ assert!((p - 1.0 / (N_BINS as f64)).abs() < TOL, "{}", p);
+ }
+ }
+}
+
+#[test]
+fn unit_circle() {
+ use std::f64::consts::PI;
+ let mut h = Histogram100::with_const_width(-PI, PI);
+ let dist = rand_distr::UnitCircle;
+ let mut rng = rand_pcg::Pcg32::from_entropy();
+ for _ in 0..N_SAMPLES {
+ let v: [f64; 2] = dist.sample(&mut rng);
+ h.add(v[0].atan2(v[1])).unwrap();
+ }
+ let sum: u64 = h.bins().iter().sum();
+ println!("{:?}", h);
+ for &b in h.bins() {
+ let p = (b as f64) / (sum as f64);
+ assert!((p - 1.0 / (N_BINS as f64)).abs() < TOL, "{}", p);
+ }
+}