Interval.h

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//===========================================================================
//===========================================================================


#ifndef __INTERVAL_H
#define __INTERVAL_H


class Interval
{
private:
    double   lower;

    double   upper;

public:
    Interval()
    {
        lower = upper = 0;
    }

    Interval(double lo)
    {
        lower = upper = lo;
    }

    Interval(double lo, double hi)
    {
        lower = lo; upper = hi;
    }

    double   lowerBound() const
    {
        return lower;
    }

    double   upperBound() const
    {
        return upper;
    }

    double   width() const
    {
        return upper - lower;
    }
};


#endif