Dist Rust

PDF, CDF, and percent-point/quantile functions for the normal and Student’s t distributions

🎉 Zero dependencies

Installation

Add this line to your application’s Cargo.toml under [dependencies]:

distrs = "0.2"

Getting Started

• Normal
• Student’s t

Normal

use distrs::Normal;

let pdf = Normal::pdf(x, mean, std_dev);
let cdf = Normal::cdf(x, mean, std_dev);
let ppf = Normal::ppf(p, mean, std_dev);

Student’s t

use distrs::StudentsT;

let pdf = StudentsT::pdf(x, df);
let cdf = StudentsT::cdf(x, df);
let ppf = StudentsT::ppf(p, df);

Features

• no_std - enable no_std support (requires libm)

References

• Algorithm AS 241: The Percentage Points of the Normal Distribution
• Algorithm 395: Student’s t-distribution
• Algorithm 396: Student’s t-quantiles

History

View the changelog

Contributing

Everyone is encouraged to help improve this project. Here are a few ways you can help:

• Report bugs
• Fix bugs and submit pull requests
• Write, clarify, or fix documentation
• Suggest or add new features

To get started with development:

git clone https://github.com/ankane/dist-rust.git
cd dist-rust
cargo test