1 /* 2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package java.util.function; 26 27 /** 28 * An operation on two {@code double} operands yielding a {@code double} result. 29 * 30 * @since 1.8 31 */ 32 public interface DoubleBinaryOperator /* extends BinaryOperator<Double> */ { 33 // 34 // @Override 35 // public default Double operate(Double left, Double right) { return operateAsDouble((double) left, (double) right); } 36 37 /** 38 * Returns the {@code double} result of the operation upon the 39 * {@code double} operands. The parameters are named {@code left} and 40 * {@code right} for operations where the order of parameters matters. 41 * 42 * @param left the left operand value 43 * @param right the right operand value 44 * @return the result of the operation 45 */ 46 public double operateAsDouble(double left, double right); 47 }