exp-rs 0.2.0

no_std expression parser, compiler, and evaluation engine for math expressions designed for embedded, with qemu examples
Documentation 
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use exp_rs::{context::EvalContext, interp};
use std::rc::Rc;

#[test]
fn debug_sin_parsing() {
    let mut ctx = EvalContext::new();
    let _ = ctx.register_native_function("sin", 1, |args| args[0].sin());
    let ctx_rc = Rc::new(ctx);

    println!("Testing 'sin 1':");
    match interp("sin 1", Some(ctx_rc.clone())) {
        Ok(result) => println!("  Result: {}", result),
        Err(e) => println!("  Error: {}", e),
    }

    println!("Testing 'sin 1 + 2':");
    match interp("sin 1 + 2", Some(ctx_rc.clone())) {
        Ok(result) => println!("  Result: {}", result),
        Err(e) => println!("  Error: {}", e),
    }

    println!("Testing 'sin(1) + 2':");
    match interp("sin(1) + 2", Some(ctx_rc.clone())) {
        Ok(result) => println!("  Result: {}", result),
        Err(e) => println!("  Error: {}", e),
    }
}