Documentation

A library for evaluating math expressions.

Published Versions

The trimmed shunting crate has has its latest version pushed to crates.io as thin-shunting

Using the library

fn main() {
  let input = "sin(0.2)^2 + cos(0.2)^2";
  let expr = ShuntingParser::parse_str(input).unwrap();
  let result = MathContext::new().eval(&expr).unwrap();
  println!("{} = {}", expr, result);
}

A MathContext

MathContext allows keeping context across multiple invocations to parse and evaluate. You can do this via the setvar method.

Credit

The vast majority of the work here was done by Rodolfo Granata warlock.cc@gmail.com, I've just trimmed things down and cleaned up the code a little.