f_reldif.ihlp

是一个经济学管理应用软件 很难找的 但是经济学学生又必须用到

{* 30nov2004}{...}
{phang}
{cmd:reldif(}{it:x}{cmd:,}{it:y}{cmd:)} returns the "relative"
	difference  |{it:x}-{it:y}|/(|{it:y}|+1).  If both arguments
	are the same type of extended missing value,
	{cmd:reldif(}{it:x}{cmd:,}{it:y}{cmd:)} will return 0. If only
	one argument is {it:missing}, or the two arguments are two different
	types of {it:missing}, {cmd:reldif(}{it:x}{cmd:,}{it:y}{cmd:)} will
	return {it:missing} ({hi:.}).{p_end}