Here you can find the source of asinh(double xval)
public static double asinh(double xval)
//package com.java2s; /*/* www . jav a2s .c om*/ * ===================================================================== * This file is part of JSatTrak. * * Copyright 2007-2013 Shawn E. Gano * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ===================================================================== * Created June 2009 */ public class Main { public static double asinh(double xval) { return Math.log(xval + Math.sqrt(xval * xval + 1.0)); } }