razvancojocaru / extendedcalculator

Android pocket calculator that uses a mathematical expressions evaluator based on the Visitor Pattern

ExtendedCalculator

Android pocket calculator that uses a mathematical expressions evaluator based on the Visitor Pattern.

Project contains a simple android interface to use the expressions evaluator.
ExpressionParser is the main class of the evaluator. It receives the mathematical expression as a string generated from the main activity, given to the eval() method, and returns a floating point result.

The following operations are implemented:

• sum (+)
• subtraction (-)
• multiplication (*)
• division (/)
• square root (sqrt)
• power (^)
• sinus (sin)
• cosinus (cos)
• logarithm (log)