aboutsummaryrefslogtreecommitdiff
path: root/rand/src/distributions/unit_circle.rs
diff options
context:
space:
mode:
Diffstat (limited to 'rand/src/distributions/unit_circle.rs')
-rw-r--r--rand/src/distributions/unit_circle.rs40
1 files changed, 20 insertions, 20 deletions
diff --git a/rand/src/distributions/unit_circle.rs b/rand/src/distributions/unit_circle.rs
index 01ab76a..56e75b6 100644
--- a/rand/src/distributions/unit_circle.rs
+++ b/rand/src/distributions/unit_circle.rs
@@ -6,28 +6,21 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-use Rng;
-use distributions::{Distribution, Uniform};
+#![allow(deprecated)]
+#![allow(clippy::all)]
+
+use crate::Rng;
+use crate::distributions::{Distribution, Uniform};
/// Samples uniformly from the edge of the unit circle in two dimensions.
///
/// Implemented via a method by von Neumann[^1].
///
-///
-/// # Example
-///
-/// ```
-/// use rand::distributions::{UnitCircle, Distribution};
-///
-/// let circle = UnitCircle::new();
-/// let v = circle.sample(&mut rand::thread_rng());
-/// println!("{:?} is from the unit circle.", v)
-/// ```
-///
/// [^1]: von Neumann, J. (1951) [*Various Techniques Used in Connection with
/// Random Digits.*](https://mcnp.lanl.gov/pdf_files/nbs_vonneumann.pdf)
/// NBS Appl. Math. Ser., No. 12. Washington, DC: U.S. Government Printing
/// Office, pp. 36-38.
+#[deprecated(since="0.7.0", note="moved to rand_distr crate")]
#[derive(Clone, Copy, Debug)]
pub struct UnitCircle;
@@ -61,7 +54,7 @@ impl Distribution<[f64; 2]> for UnitCircle {
#[cfg(test)]
mod tests {
- use distributions::Distribution;
+ use crate::distributions::Distribution;
use super::UnitCircle;
/// Assert that two numbers are almost equal to each other.
@@ -82,7 +75,7 @@ mod tests {
#[test]
fn norm() {
- let mut rng = ::test::rng(1);
+ let mut rng = crate::test::rng(1);
let dist = UnitCircle::new();
for _ in 0..1000 {
let x = dist.sample(&mut rng);
@@ -92,10 +85,17 @@ mod tests {
#[test]
fn value_stability() {
- let mut rng = ::test::rng(2);
- let dist = UnitCircle::new();
- assert_eq!(dist.sample(&mut rng), [-0.8032118336637037, 0.5956935036263119]);
- assert_eq!(dist.sample(&mut rng), [-0.4742919588505423, -0.880367615130018]);
- assert_eq!(dist.sample(&mut rng), [0.9297328981467168, 0.368234623716601]);
+ let mut rng = crate::test::rng(2);
+ let expected = [
+ [-0.9965658683520504, -0.08280380447614634],
+ [-0.9790853270389644, -0.20345004884984505],
+ [-0.8449189758898707, 0.5348943112253227],
+ ];
+ let samples = [
+ UnitCircle.sample(&mut rng),
+ UnitCircle.sample(&mut rng),
+ UnitCircle.sample(&mut rng),
+ ];
+ assert_eq!(samples, expected);
}
}