aboutsummaryrefslogtreecommitdiff
path: root/rand/examples/monte-carlo.rs
diff options
context:
space:
mode:
authorDaniel Mueller <deso@posteo.net>2020-04-04 14:39:19 -0700
committerDaniel Mueller <deso@posteo.net>2020-04-04 14:39:19 -0700
commitd0d9683df8398696147e7ee1fcffb2e4e957008c (patch)
tree4baa76712a76f4d072ee3936c07956580b230820 /rand/examples/monte-carlo.rs
parent203e691f46d591a2cc8acdfd850fa9f5b0fb8a98 (diff)
downloadnitrocli-d0d9683df8398696147e7ee1fcffb2e4e957008c.tar.gz
nitrocli-d0d9683df8398696147e7ee1fcffb2e4e957008c.tar.bz2
Remove vendored dependencies
While it appears that by now we actually can get successful builds without Cargo insisting on Internet access by virtue of using the --frozen flag, maintaining vendored dependencies is somewhat of a pain point. This state will also get worse with upcoming changes that replace argparse in favor of structopt and pull in a slew of new dependencies by doing so. Then there is also the repository structure aspect, which is non-standard due to the way we vendor dependencies and a potential source of confusion. In order to fix these problems, this change removes all the vendored dependencies we have. Delete subrepo argparse/:argparse Delete subrepo base32/:base32 Delete subrepo cc/:cc Delete subrepo cfg-if/:cfg-if Delete subrepo getrandom/:getrandom Delete subrepo lazy-static/:lazy-static Delete subrepo libc/:libc Delete subrepo nitrokey-sys/:nitrokey-sys Delete subrepo nitrokey/:nitrokey Delete subrepo rand/:rand
Diffstat (limited to 'rand/examples/monte-carlo.rs')
-rw-r--r--rand/examples/monte-carlo.rs48
1 files changed, 0 insertions, 48 deletions
diff --git a/rand/examples/monte-carlo.rs b/rand/examples/monte-carlo.rs
deleted file mode 100644
index 39c779f..0000000
--- a/rand/examples/monte-carlo.rs
+++ /dev/null
@@ -1,48 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-// Copyright 2013-2018 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.
-
-//! # Monte Carlo estimation of π
-//!
-//! 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
-//! ```
-//!
-//! The circle is entirely within the square, so if we sample many points
-//! randomly from the square, roughly π / 4 of them should be inside the circle.
-//!
-//! We can use the above fact to estimate the value of π: pick many points in
-//! the square at random, calculate the fraction that fall within the circle,
-//! and multiply this fraction by 4.
-
-#![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));
-}