LiulietLee / LLCalculatorBrain

Calculate string formula

LLCalculatorBrain

This is a model that is used to figure out string formula.

Installation

Just move LLCalculatorBrain.swift to your project.

Usage

You can see an example in /SampleExample

let calculatorBrain = LLCalculatorBrain()

let equation = "tan(2*3^(3+2-3.123)/12.2)+sin(pi)+cos(2)*sqrt(144)" // Or something like this
let result = calculatorBrain.calculateThisEquation(equation) // result = -1.54053662

There MUST BE a "(" behind sin, cos, tan and sqrt.

Error Code

• Error 1: Divide by zero
• Error 2: Parentheses do not match
• Error 3: Negative under sqrt
• Error 4: Wrong Equation
• Error 5: Empty Equation

TO DO

• More Error Catch