tinyexpr-rs

Tiny recursive descent expression parser, compiler, and evaluation engine for math expressions.

This is a WIP port of TinyExpr to Rust. Current release only supports built-in system functions (trigonometry, algebraic operations, constants, etc.). See the tests module for more examples.

Documentation

Usage

```toml

Cargo.toml

[dependencies] tinyexpr = "0.1" ```

Example

```rust extern crate tinyexpr;

fn main() { // parse the expression and fetch result let r = tinyexpr::interp("2+2*2").unwrap();

// should print "6"
println!("{:?}", r);

} ```

Build instructions

cargo build cargo run --example example

Todo

• support for custom user function
• support for functions taking more than 2 parameters

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)