--- /dev/null	2012-11-16 09:11:27.403150018 -0800
+++ new/src/share/classes/java/util/function/DoubleBinaryOperator.java	2012-11-19 20:43:41.910654311 -0800
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package java.util.function;
+
+/**
+ * Combines two {@code double} operands producing an {@code double} result.
+ *
+ * @since 1.8
+ */
+public interface DoubleBinaryOperator /* extends BinaryOperator<Double> */ {
+//
+//    /**
+//     * Returns the result of some binary operation upon the operands. The
+//     * parameters are named {@code left} and {@code right} for operations where
+//     * the order of operands matters.
+//     *
+//     * @param left the left operand
+//     * @param right the right operand
+//     * @return result of the operation
+//     */
+//    public default Double operate(Double left, Double right) { return operateAsDouble((double) left, (double) right); }
+
+    /**
+     * Returns the result of some binary operation upon the operands. The
+     * parameters are named {@code left} and {@code right} for operations where
+     * the order of operands matters.
+     *
+     * @param left value used as the left operand
+     * @param rightvalue used as the right operand
+     * @return result value of the operation
+     */
+    public double operateAsDouble(double left, double right);
+}