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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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).

 *

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package java.util.function;

/**

 * Represents a function that accepts a double-valued argument and produces a

 * result.  This is the {@code double}-consuming primitive specialization for

 * {@link Function}.

 *

 * <p>This is a <a href="package-summary.html">functional interface</a>

 * whose functional method is {@link #apply(double)}.

 *

 * @param <R> the type of the result of the function

 *

 * @see Function

 * @since 1.8

 */

@FunctionalInterface

public interface DoubleFunction<R> {

    /**

     * Applies this function to the given argument.

     *

     * @param value the function argument

     * @return the function result

     */

    R apply(double value);

}