/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* 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 com.rapidminer.tools.expression.internal.function.logical;
import com.rapidminer.tools.expression.FunctionDescription;
/**
* Class for the AND function that has 2 logical (numerical, true or false) inputs
*
* @author Sabrina Kirstein
*
*/
public class And extends AbstractLogicalFunctionWith2Inputs {
/**
* Constructs a AND Function with 2 parameters with {@link FunctionDescription}
*/
public And() {
super("logical.and");
}
@Override
protected Boolean compute(double left, double right) {
if (Double.isNaN(left) || Double.isNaN(right)) {
return null;
}
boolean leftValue = Math.abs(left) < Double.MIN_VALUE * 2 ? false : true;
boolean rightValue = Math.abs(right) < Double.MIN_VALUE * 2 ? false : true;
return leftValue && rightValue;
}
@Override
protected Boolean compute(double left, Boolean right) {
if (Double.isNaN(left) || right == null) {
return null;
}
boolean leftValue = Math.abs(left) < Double.MIN_VALUE * 2 ? false : true;
return leftValue && right;
}
@Override
protected Boolean compute(Boolean left, Boolean right) {
if (left == null || right == null) {
return null;
}
return left && right;
}
}