{* *! version 1.0.2  15mar2007}{...}
    {cmd:trigamma(}{it:x}{cmd:)}
{p2colset 8 22 26 2}{...}
{p2col: Domain:}-1e+15 to 8e+307{p_end}
{p2col: Range:}0 to 8e+307 and {it:missing}{p_end}
{p2col: Description:}returns the second derivative of
	{cmd:lngamma(}{it:x}{cmd:)}.
	The {cmd:trigamma()} function is the derivative of
	{cmd:digamma(}{it:x}{cmd:)}.{p_end}
{p2colreset}{...}
