Java BigInteger Value Check isSqrtXXX(BigInteger n, BigInteger root)

Description

is Sqrt XXX

License

Open Source License

Declaration

private static boolean isSqrtXXX(BigInteger n, BigInteger root) 

Method Source Code

//package com.java2s;
/*/* w w  w . j  ava  2 s .c om*/
 * Redberry: symbolic tensor computations.
 *
 * Copyright (c) 2010-2013:
 *   Stanislav Poslavsky   <stvlpos@mail.ru>
 *   Bolotin Dmitriy       <bolotin.dmitriy@gmail.com>
 *
 * This file is part of Redberry.
 *
 * Redberry is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Redberry is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Redberry. If not, see <http://www.gnu.org/licenses/>.
 */

import java.math.BigInteger;

public class Main {
    private static boolean isSqrtXXX(BigInteger n, BigInteger root) {
        final BigInteger lowerBound = root.pow(2);
        final BigInteger upperBound = root.add(BigInteger.ONE).pow(2);
        return lowerBound.compareTo(n) <= 0 && n.compareTo(upperBound) < 0;
    }
}

Related

1. isPerfectCubic(BigInteger n)
2. isPositive(final BigInteger value)
3. isPowerOfTwo(BigInteger bintValue)
4. isPowerOfTwo(BigInteger x)
5. isRootInQuadraticResidues(BigInteger n, BigInteger p)
6. isZero(BigInteger value)