cc.redberry.core.number.Real Maven / Gradle / Ivy

Go to download
/*
 * Redberry: symbolic tensor computations.
 *
 * Copyright (c) 2010-2013:
 *   Stanislav Poslavsky   
 *   Bolotin Dmitriy       
 *
 * 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 .
 */
package cc.redberry.core.number;

import org.apache.commons.math3.Field;

/**
 * Real numbers.
 *
 * @author Stanislav Poslavsky
 */
public abstract class Real implements Number, Comparable {

    @Override
    public Field getField() {
        return RealField.getInstance();
    }

    /**
     * Returns signum of this.
     *
     * @return signum
     */
    public abstract int signum();
}