1*48921Scael.\" Copyright (c) 1989, 1991 The Regents of the University of California. 2*48921Scael.\" All rights reserved. 3*48921Scael.\" 4*48921Scael.\" %sccs.include.redist.man% 5*48921Scael.\" 6*48921Scael.\" @(#)cosh.3 5.1 (Berkeley) 05/02/91 7*48921Scael.\" 8*48921Scael.Dd 9*48921Scael.Dt COSH 3 10*48921Scael.Os 11*48921Scael.Sh NAME 12*48921Scael.Nm cosh 13*48921Scael.Nd hyperbolic cosine function 14*48921Scael.Sh SYNOPSIS 15*48921Scael.Fd #include <math.h> 16*48921Scael.Ft double 17*48921Scael.Fn cosh "double x" 18*48921Scael.Sh DESCRIPTION 19*48921ScaelThe 20*48921Scael.Fn cosh 21*48921Scaelfunction computes the hyperbolic cosine of 22*48921Scael.Fa x . 23*48921Scael.Sh RETURN VALUES 24*48921ScaelThe 25*48921Scael.Fn cosh 26*48921Scaelfunction returns the hyperbolic cosine unless the magnitude 27*48921Scaelof 28*48921Scael.Fa x 29*48921Scaelis too large; in this event, the global variable 30*48921Scael.Va errno 31*48921Scaelis set to 32*48921Scael.Er ERANGE . 33*48921Scael.Sh SEE ALSO 34*48921Scael.Xr acos 3 , 35*48921Scael.Xr asin 3 , 36*48921Scael.Xr atan 3 , 37*48921Scael.Xr atan2 3 , 38*48921Scael.Xr cos 3 , 39*48921Scael.Xr sin 3 , 40*48921Scael.Xr sinh 3 , 41*48921Scael.Xr tan 3 , 42*48921Scael.Xr tanh 3 , 43*48921Scael.Xr math 3 , 44*48921Scael.Sh STANDARDS 45*48921ScaelThe 46*48921Scael.Fn cosh 47*48921Scaelfunction conforms to 48*48921Scael.St -ansiC . 49