evaluate

evaluate is mathematical evaluator for Lua.

Features:

• Supports variables
• Support constants like pi
• Supports standard mathematical operators
• Functions with a variable number of arguments like min
• Supports unary operators, e.g. -2 or +2

Usage Examples:

local evaluate = require(...)

-- Simple expression without variables.
evaluate("1 + 1 / 3") -- 1.3333333333333

-- A more complex expression showing support for unary operators.
evaluate("(3.4 + -4.1)/2") -- -0.35

-- Expression using functions and variables.
evaluate("sqrt(a^2 + b^2)", {
    a = 2.4;
    b = 9.253;
}) -- 9.5591845363504

-- Expression with constant.
evaluate("pi * 2") -- 6.2831853071796

-- Expression using composite function calls and constant.
evaluate("sin(cos(pi)))") -- -0.8414709848079

-- Expression using function with variable parameters.
evaluate("max(2, 4, 7, 1)") -- 7

Supported Operators

Supported Functions

Supported Constants