Mathex Regex for Equations

Overview

Mathex allows you to specify your input validation logic in a human-readable, verfiable, matinainable way, as opposed to putting validation logic in language specific code that is error prone, time-consuming, and highly specific.

Mathex provides aims to provide the same interface in every language:

    mathex("equation", val1, val2,...valN)
    mathex("equation", arrayOfValues)

e.g.
    mathex("max(A,B) > C << 2", val, val, val)

The return value for a valid mathex call is either 0 or 1.

-1 indicates an error during processing.

For lua's mathex library, Error strings are returned:

result, errorstr = mathex("equation", val1, val2,...valN)
if result < 0 then error(errorstr)

Mathex expects valid IEEE Floating point values for all Value inputs

Syntax

Mathex has 5 different "things" in the language:

1. Numbers (###.###)
2. Variables (A, B, C, AA, BB, CC, etc.)
3. Math Symbols (+-*/^%&|!=(), etc.)
4. Functions (min, max, abs, etc.)
5. Commas ,

C++ Operator Precedence is used, with the addition of ^ for power

Example:

"max(5^A, 300) < abs(A) << 5"

Further details can be read in the comments of mathex.lua - it's quite detailed