*! version 1.0.0  02/02/93 extrname <chklna1> utility; STB-13: dm13
program define _crcexn5  /* <chklna1> lname fname mname sx s cs */
	version 3.0
	local lname   "`1'"
	local fname   "`2'"
	local mname   "`3'"
	local sx      "`4'"
	local suffix  "`5'"
	local csuffix "`6'"

	tempvar tofix bad 
	quietly { 
		gen byte `tofix' = `lname'=="`suffix'" & `sx'==""
		capture assert `tofix'==0
		if _rc==0 { exit }

		local d=length("`csuffix'")
		minlen `d' `sx'
		replace `sx'="`csuffix'" if `tofix'

				/* try the middle name for last name */
		local type : type `mname'
		minlen `type' `lname'
		replace `lname'=`mname' if `tofix'
		replace `mname'="" if `tofix'
		compress `lname' `mname'

		gen byte `bad'=`tofix' & `lname' /* still */ ==""
		capture assert `bad'==0
		if _rc==0 { exit }

				/* use the first name for last name */
		local type : type `fname'
		minlen `type' `lname'
		replace `lname' = `fname' if `bad'
		replace `fname' = "" if `bad'
		compress `fname' `lname'
	}
end
exit 
/*
	<chklna1> lname fname mname sx "suffix" "csuffix"

		Check of lname contains "suffix" (e.g., "Jr")
		Check the sx is empty in such cases.
		Put corrected suffix "csuffix" (e.g., "Jr.") in sx.
		Find a new last name from either fname or mname 
*/