Java Number Power powSqrt(double x, double y)

Description

pow Sqrt

License

Open Source License

Declaration

private static final double powSqrt(double x, double y) 

Method Source Code

//package com.java2s;

public class Main {
    private static final double powSqrt(double x, double y) {
        int den = 1024, num = (int) (y * den), iterations = 10;
        double n = Double.MAX_VALUE;

        while (n >= Double.MAX_VALUE && iterations > 1) {
            n = x;//from  w ww.j a v a  2 s.c o  m

            for (int i = 1; i < num; i++)
                n *= x;

            if (n >= Double.MAX_VALUE) {
                iterations--;
                den = (int) (den / 2);
                num = (int) (y * den);
            }
        }

        for (int i = 0; i < iterations; i++)
            n = Math.sqrt(n);

        return n;
    }
}

Related

1. powExact(long x, int y)
2. powf(float v1, float v2)
3. powi(double x, int p)
4. powInt(int base, int exponent)
5. powLLL(double[] a, double b)