{* *! version 1.0.1  09feb2009}{...}
    {cmd:cosh(}{it:x}{cmd:)}
{p2colset 8 22 26 2}{...}
{p2col: Domain:}-709 to 709{p_end}
{p2col: Range:}1 to 4.11e+307{p_end}
{p2col: Description:}returns the hyperbolic cosine of {it:x},{break}
        {cmd:cosh(}{it:x}{cmd:)} =
	{exp({it:x}) + exp(-{it:x})}/2.{p_end}
{p2colreset}{...}
