crunch_eval

High-performance algebraic expression evaluator.

Basic usage:

use crunch_eval::expr::Expr;
let expr = Expr::compile("1 + 1").unwrap();
let val: f64 = expr.evaluate_blank().unwrap();
assert_eq!(val, 2.0);

Benchmarks:

Expression: 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4 + 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4 + 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4 + 6.5*7.8^2.3 + (3.5^3+7/2)^3 -(5*4/(2-3))*4

Time to compile long expression:

compile	time/op (µs)
crunch_eval	13.56
evalexpr	32.36

Time to evaluate long expression:

eval	time/op (ns)
crunch_eval	2.97
evalexpr	5.96

Expression: double(x + 1)

Time to evaluate expression with variable and function:

eval	time/op (ns)
crunch_eval	48.46
evalexpr	341.83