1.\" $OpenBSD: sinh.3,v 1.11 2007/05/31 19:19:36 jmc Exp $ 2.\" Copyright (c) 1991 The Regents of the University of California. 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright 9.\" notice, this list of conditions and the following disclaimer. 10.\" 2. Redistributions in binary form must reproduce the above copyright 11.\" notice, this list of conditions and the following disclaimer in the 12.\" documentation and/or other materials provided with the distribution. 13.\" 3. Neither the name of the University nor the names of its contributors 14.\" may be used to endorse or promote products derived from this software 15.\" without specific prior written permission. 16.\" 17.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27.\" SUCH DAMAGE. 28.\" 29.\" from: @(#)sinh.3 6.6 (Berkeley) 4/19/91 30.Dd $Mdocdate: May 31 2007 $ 31.Dt SINH 3 32.Os 33.Sh NAME 34.Nm sinh , 35.Nm sinhf 36.Nd hyperbolic sine functions 37.Sh SYNOPSIS 38.Fd #include <math.h> 39.Ft double 40.Fn sinh "double x" 41.Ft float 42.Fn sinhf "float x" 43.Sh DESCRIPTION 44The 45.Fn sinh 46function computes the hyperbolic sine of 47.Fa x . 48The 49.Fn sinhf 50function is a single precision version of 51.Fn sinh . 52.Sh RETURN VALUES 53The 54.Fn sinh 55and 56.Fn sinhf 57functions return the hyperbolic sine value unless 58the magnitude 59of 60.Fa x 61is too large; in this event, the global variable 62.Va errno 63is set to 64.Er ERANGE . 65.Sh SEE ALSO 66.Xr acos 3 , 67.Xr asin 3 , 68.Xr atan 3 , 69.Xr atan2 3 , 70.Xr cos 3 , 71.Xr cosh 3 , 72.Xr math 3 , 73.Xr sin 3 , 74.Xr tan 3 , 75.Xr tanh 3 76.Sh STANDARDS 77The 78.Fn sinh 79function conforms to 80.St -ansiC . 81