001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.math3.analysis.function;
019
020import org.apache.commons.math3.analysis.DifferentiableUnivariateFunction;
021import org.apache.commons.math3.analysis.differentiation.DerivativeStructure;
022import org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableFunction;
023import org.apache.commons.math3.util.FastMath;
024
025/**
026 * Hyperbolic sine function.
027 *
028 * @since 3.0
029 */
030public class Sinh implements UnivariateDifferentiableFunction, DifferentiableUnivariateFunction {
031    /** {@inheritDoc} */
032    public double value(double x) {
033        return FastMath.sinh(x);
034    }
035
036    /** {@inheritDoc}
037     * @deprecated as of 3.1, replaced by {@link #value(DerivativeStructure)}
038     */
039    @Deprecated
040    public DifferentiableUnivariateFunction derivative() {
041        return new Cosh();
042    }
043
044    /** {@inheritDoc}
045     * @since 3.1
046     */
047    public DerivativeStructure value(final DerivativeStructure t) {
048        return t.sinh();
049    }
050
051}