xref: /freebsd/lib/msun/man/cosh.3 (revision 3a8617a83f16ffc9db4f96e1f0f21af94078e6b1)

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.\"     from: @(#)cosh.3	5.1 (Berkeley) 5/2/91
.\"	$Id: cosh.3,v 1.4 1993/10/29 22:57:26 jtc Exp $
.\"
.Dd May 2, 1991
.Dt COSH 3
.Os
.Sh NAME
.Nm cosh
.Nd hyperbolic cosine function
.Sh SYNOPSIS
.Fd #include <math.h>
.Ft double
.Fn cosh "double x"
.Sh DESCRIPTION
The
.Fn cosh
function computes the hyperbolic cosine of
.Fa x .
.Sh RETURN VALUES
The
.Fn cosh
function returns the hyperbolic cosine unless the magnitude
of
.Fa x
is too large; in this event, the global variable
.Va errno
is set to
.Er ERANGE .
.Sh SEE ALSO
.Xr acos 3 ,
.Xr asin 3 ,
.Xr atan 3 ,
.Xr atan2 3 ,
.Xr cos 3 ,
.Xr sin 3 ,
.Xr sinh 3 ,
.Xr tan 3 ,
.Xr tanh 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fn cosh
function conforms to
.St -ansiC .