// Decompiled by Jad v1.5.7b. Copyright 1997-99 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   Interval.java


class Interval
{

    Interval()
    {
    }

    static void boxScale(double x[], double a)
    {
        x[0] *= a;
        x[1] *= a;
    }

    static void boxAdd(double a[], double b[], double sum[])
    {
        sum[0] = a[0] + b[0];
        sum[1] = a[1] + b[1];
    }

    static void boxMul(double a[], double b[], double product[])
    {
        boxMulTemp[0] = a[0] * b[0];
        boxMulTemp[1] = a[0] * b[1];
        boxMulTemp[2] = a[1] * b[0];
        boxMulTemp[3] = a[1] * b[1];
        product[0] = boxMulTemp[0];
        product[1] = boxMulTemp[0];
        for (int i = 1; i < 4; i++)
        {
            if (boxMulTemp[i] < product[0])
                product[0] = boxMulTemp[i];
            if (boxMulTemp[i] > product[1])
                product[1] = boxMulTemp[i];
        }

    }

    static void boxSquare(double x[], double square[])
    {
        double x0 = x[0] * x[0];
        double x1 = x[1] * x[1];
        if (x[0] >= 0)
        {
            square[0] = x0;
            square[1] = x1;
        } else
        if (x[1] <= 0)
        {
            square[0] = x1;
            square[1] = x0;
        } else
        {
            square[0] = 0;
            square[1] = x0 <= x1 ? x1 : x0;
        }
    }

    static void boxCube(double x[], double cube[])
    {
        boxSquare(x, cube);
        boxMul(x, cube, cube);
    }

    private static double boxMulTemp[] = new double[4];

}