#include "functioncalculater.h"
#include <stdlib.h>


FunctionCalculater::FunctionCalculater()
{
}

//method  Monte-Carlo
double FunctionCalculater::integrate(double (*calculate)(double), double from, double to)
{
    double resultSum = 0;

    for(double tmp = from; tmp<to; tmp+=gap)
    {
        double base = ( tmp+gap<=to)?(gap):(to-tmp);

        resultSum += base * calculate(tmp);
    }

    return resultSum;
}


double *FunctionCalculater::calculateInInterval(double (*calculate)(double), double from, double to)
{
    int count = (int) (( to-from)/gap);
    double *result = new double[ (int) (( to-from)/gap) ];

    return result;
}

comp FunctionCalculater::cintegrate(comp (*calculate)(comp), const comp& from , const comp& to)
    {
        comp resultSum;

        for(comp tmp = from; std::abs(tmp) < std::abs(to); tmp+=gap)
        {
            comp base = ( std::abs(tmp+gap)<=std::abs(to))?(gap):(to-tmp);

            resultSum += base * ( calculate(tmp) );
            cout << resultSum << endl;
        }

        return resultSum;
    }