1 files changed, 0 insertions, 103 deletions
diff --git a/rand/src/distributions/cauchy.rs b/rand/src/distributions/cauchy.rs
deleted file mode 100644
index 0a5d149..0000000
--- a/rand/src/distributions/cauchy.rs
+++ /dev/null
@@ -1,103 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-// Copyright 2016-2017 The Rust Project Developers.
-//
-// 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.
-
-//! The Cauchy distribution.
-#![allow(deprecated)]
-#![allow(clippy::all)]
-
-use crate::Rng;
-use crate::distributions::Distribution;
-use std::f64::consts::PI;
-
-/// The Cauchy distribution `Cauchy(median, scale)`.
-///
-/// This distribution has a density function:
-/// `f(x) = 1 / (pi * scale * (1 + ((x - median) / scale)^2))`
-#[deprecated(since="0.7.0", note="moved to rand_distr crate")]
-#[derive(Clone, Copy, Debug)]
-pub struct Cauchy {
-    median: f64,
-    scale: f64
-}
-
-impl Cauchy {
-    /// Construct a new `Cauchy` with the given shape parameters
-    /// `median` the peak location and `scale` the scale factor.
-    /// Panics if `scale <= 0`.
-    pub fn new(median: f64, scale: f64) -> Cauchy {
-        assert!(scale > 0.0, "Cauchy::new called with scale factor <= 0");
-        Cauchy {
-            median,
-            scale
-        }
-    }
-}
-
-impl Distribution<f64> for Cauchy {
-    fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> f64 {
-        // sample from [0, 1)
-        let x = rng.gen::<f64>();
-        // get standard cauchy random number
-        // note that π/2 is not exactly representable, even if x=0.5 the result is finite
-        let comp_dev = (PI * x).tan();
-        // shift and scale according to parameters
-        let result = self.median + self.scale * comp_dev;
-        result
-    }
-}
-
-#[cfg(test)]
-mod test {
-    use crate::distributions::Distribution;
-    use super::Cauchy;
-
-    fn median(mut numbers: &mut [f64]) -> f64 {
-        sort(&mut numbers);
-        let mid = numbers.len() / 2;
-        numbers[mid]
-    }
-
-    fn sort(numbers: &mut [f64]) {
-        numbers.sort_by(|a, b| a.partial_cmp(b).unwrap());
-    }
-
-    #[test]
-    #[cfg(not(miri))] // Miri doesn't support transcendental functions
-    fn test_cauchy_averages() {
-        // NOTE: given that the variance and mean are undefined,
-        // this test does not have any rigorous statistical meaning.
-        let cauchy = Cauchy::new(10.0, 5.0);
-        let mut rng = crate::test::rng(123);
-        let mut numbers: [f64; 1000] = [0.0; 1000];
-        let mut sum = 0.0;
-        for i in 0..1000 {
-            numbers[i] = cauchy.sample(&mut rng);
-            sum += numbers[i];
-        }
-        let median = median(&mut numbers);
-        println!("Cauchy median: {}", median);
-        assert!((median - 10.0).abs() < 0.4); // not 100% certain, but probable enough
-        let mean = sum / 1000.0;
-        println!("Cauchy mean: {}", mean);
-        // for a Cauchy distribution the mean should not converge
-        assert!((mean - 10.0).abs() > 0.4); // not 100% certain, but probable enough
-    }
-
-    #[test]
-    #[should_panic]
-    fn test_cauchy_invalid_scale_zero() {
-        Cauchy::new(0.0, 0.0);
-    }
-
-    #[test]
-    #[should_panic]
-    fn test_cauchy_invalid_scale_neg() {
-        Cauchy::new(0.0, -10.0);
-    }
-}