Numbers.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2020 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
package org.turro.math;
 
public class Numbers {
  
  public static double round(Number value, int digits) {
    return new Round(value.doubleValue()).decimals(digits).value();
  }
  
  public static double percent(Number value, int digits) {
    return new Round(value.doubleValue()).perCent(digits);
  }
  
  public static boolean isEven(Number value) {
    return value.longValue() % 2 == 0;
  }
 
  public static boolean isOdd(Number value) {
    return !isEven(value);
  }
 
  public static boolean isZero(Number value, int precision) {
    return Zero.near(value, precision);
  }
  
  public static boolean isInteger(Number value) {
    return !Double.isInfinite(value.doubleValue()) && (value.doubleValue() == Math.floor(value.doubleValue()));
  }
  
  private Numbers() {
  }
 
}