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Calculator.h

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// Calculator.h
#ifndef CALCULATOR_H_
#define CALCULATOR_H_

#include "Buffer.h"
#include <vector>
#include <stack>

namespace Isis {
  class Calculator {
    public:
      Calculator();   // Constructor
      virtual ~Calculator() {}

      // Math methods
      void Negative();
      void Multiply();
      void Add();
      void Subtract();
      void Divide();
      void Modulus();

      void Exponent();
      void SquareRoot();
      void AbsoluteValue();
      void Log();
      void Log10();

      void LeftShift();
      void RightShift();
      void Minimum();
      void Maximum();
      void GreaterThan();
      void LessThan();
      void Equal();
      void LessThanOrEqual();
      void GreaterThanOrEqual();
      void NotEqual();
      void And();
      void Or();

      void Sine();
      void Cosine();
      void Tangent();
      void Secant();
      void Cosecant();
      void Cotangent();
      void Arcsine();
      void Arccosine();
      void Arctangent();
      void Arctangent2();
      void SineH();
      void CosineH();
      void TangentH();
      void ArcsineH();
      void ArccosineH();
      void ArctangentH();

      // Stack methods
      void Push(double scalar);
      void Push(Buffer &buff);
      void Push(std::vector<double> &vect);
      std::vector<double> Pop(bool keepSpecials = false);
      void PrintTop();
      bool Empty();
      virtual void Clear();

    protected:
      void PerformOperation(std::vector<double> &results,
                            std::vector<double>::iterator arg1Start, 
                            std::vector<double>::iterator arg1End,
                            double operation(double));
      void PerformOperation(std::vector<double> &results,
                            std::vector<double>::iterator arg1Start, 
                            std::vector<double>::iterator arg1End,
                            std::vector<double>::iterator arg2Start,
                            std::vector<double>::iterator arg2End,
                            double operation(double, double));

      int StackSize() { return p_valStack.size(); }

    private:
      std::stack<std::vector<double> > p_valStack;
  };
};

#endif