Equation

A Rust library for mathematical expression evaluation and simplification.

TODO

• Rewrite pest parsing as PrattParser;
• Modulo % & exponent ** support;
• Unary minus operator support;
• Support fractions as f32;
• Support basic triggernomic ratio functions sine, cosine & tangent as sin, cos & tan;
• Support evaluate steps parameter to break evaluation steps into a Vec<&str>;
• Support simplification & evaluation of algebraic expressions;
• Create simplify

Getting started

Add the following lines to your Cargo.toml dependencies:

[dependencies]
equation = "0.1.0"

Examples

Evaluate basic arithmetic equations and return a i32.

use equation::evaluate;

fn main() {
    let result = evaluate("(1 + 2) * (1 + 2)"); // Returns Ok(9)
    match result {
        Ok(val) => println!("{}", val),
        Err(e) => println!("Error: {:?}", e),
    }

    evaluate("(1 + 2) * 1 + 2"); // Returns Ok(5)
}

License

Licensed under MIT license (LICENSE-MIT | https://opensource.org/licenses/MIT) or under the Apache 2.0 (LICENSE-APACHE | https://opensource.org/license/apache-2-0/).