From fd091b04316db9dc5fafadbd6bdbe60b127408a9 Mon Sep 17 00:00:00 2001 From: Daniel Mueller Date: Thu, 2 Jan 2020 08:32:06 -0800 Subject: 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 --- rand/examples/monte-carlo.rs | 39 ++++++++++++++++++--------------------- 1 file changed, 18 insertions(+), 21 deletions(-) (limited to 'rand/examples/monte-carlo.rs') diff --git a/rand/examples/monte-carlo.rs b/rand/examples/monte-carlo.rs index 9162996..39c779f 100644 --- a/rand/examples/monte-carlo.rs +++ b/rand/examples/monte-carlo.rs @@ -11,7 +11,7 @@ //! //! Imagine that we have a square with sides of length 2 and a unit circle //! (radius = 1), both centered at the origin. The areas are: -//! +//! //! ```text //! area of circle = πr² = π * r * r = π //! area of square = 2² = 4 @@ -24,28 +24,25 @@ //! the square at random, calculate the fraction that fall within the circle, //! and multiply this fraction by 4. -#![cfg(feature="std")] - - -extern crate rand; +#![cfg(feature = "std")] use rand::distributions::{Distribution, Uniform}; fn main() { - let range = Uniform::new(-1.0f64, 1.0); - let mut rng = rand::thread_rng(); - - let total = 1_000_000; - let mut in_circle = 0; - - for _ in 0..total { - let a = range.sample(&mut rng); - let b = range.sample(&mut rng); - if a*a + b*b <= 1.0 { - in_circle += 1; - } - } - - // prints something close to 3.14159... - println!("π is approximately {}", 4. * (in_circle as f64) / (total as f64)); + let range = Uniform::new(-1.0f64, 1.0); + let mut rng = rand::thread_rng(); + + let total = 1_000_000; + let mut in_circle = 0; + + for _ in 0..total { + let a = range.sample(&mut rng); + let b = range.sample(&mut rng); + if a*a + b*b <= 1.0 { + in_circle += 1; + } + } + + // prints something close to 3.14159... + println!("π is approximately {}", 4. * (in_circle as f64) / (total as f64)); } -- cgit v1.2.1