Crate math_expression_parser 

Structs

Grammar

Enums

Expr

The enum represents numbers, binary operations (add, sub, mul, div, pow, root, log), and unary functions (sin, cos, tan, exp, ln).

Rule

Functions

eval_expr

Evaluate a previously parsed Expr.

parse_and_eval

Convenience: parse the input, evaluate it, and append the result to res.txt.

parse_expression

Parse the input string into an Expr AST.