{* *! version 1.0.2  16mar2007}{...}
    {cmd:epsdouble()}
{p2colset 8 22 26 2}{...}
{p2col: Range:}a double-precision number close to 0{p_end}
{p2col: Description:}returns the machine precision of a double-precision
	number.  If {bind:{it:d} < {cmd:epsdouble()}} and (double) {it:x} = 1,
	then {it:x} + {it:d} = (double) 1.  This function takes no
	arguments, but the parentheses must be included.{p_end}
{p2colreset}{...}
