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DIFG4A	;SFISC/DG(OHPRD)-CONDITIONALS ; [ 08/21/91  5:15 PM ]
	;;21.0;VA FileMan;;Dec 28, 1994
	;Per VHA Directive 10-93-142, this routine should not be modified.
	;
START	;
	D CHECK
	I $D(DIFGSTP) K DIFGSTP S DIFG("UNRESOLVED",DIFGSAVE(DIFG,"@NUM"))="" G X1
	S DIFGDRCT=0 F DIFGI=1:1 Q:'$D(DIFGDIC(DIFGDIC,DIFGI))  S DIFGDIGT=+$P(DIFGDIC(DIFGDIC,DIFGI),"DIFGPC(",2) D:$D(DIFGNUMF(DIFGDIGT)) GETVAL
	I $E(X)="`",$S('$D(Y):1,Y<0:1,1:0) NEW DIC S DIC=+$P($P(^DD(DIFGDIC,.01,0),U,2),"P",2) I DIC S DIC(0)="FMZ" D ^DIC S:Y>0 X=Y(0,0)
	I X'["`" S ^UTILITY("DIFGFLD",$J,.01)=X
	K Y
	D COND ;dg/ohprd 8-21-91
	I '$D(Y) S Y=-1
	I Y>0 S DIFG("CONDSET")=""
	I Y=-1 S DIFGER=22_U_DIFGY D ERROR^DIFG
	K DIFGDRCT,DIFGDIGT,^UTILITY("DIFGFLD",$J)
X1	Q
	;
CHECK	; Check for existence of higher level conds, if exist quit this level
	; and continue processing
	NEW % S %=0 F  S %=$O(DIFGCOND(%)) S:%<DIFG&% DIFGSTP="" Q:%=""!(%<DIFG)
	Q
	;
GETVAL	; Save field numbers and values
	I $D(^UTILITY("DIFGX",$J,DIFGDIGT)) S ^UTILITY("DIFGFLD",$J,DIFGNUMF(DIFGDIGT))=^(DIFGDIGT)
	Q
	;
COND	; Execute conditions
	NEW ORDR,CNUM,NUM,STP,FLD,OP,VAL
	F ORDR=0:0 S ORDR=$O(^DD(DIFGDIC,0,"FD","B",ORDR)) Q:'ORDR!$D(Y)  S CNUM=$O(^(ORDR,"")),TYPE=$P(^DD(DIFGDIC,0,"FD",CNUM,0),U,3) K STP F NUM=0:0 S NUM=$O(^DD(DIFGDIC,0,"FD",CNUM,NUM)) D:NUM'=+NUM SETY Q:NUM'=+NUM  D  Q:$D(STP)
	. S FLD=$P(^DD(DIFGDIC,0,"FD",CNUM,NUM),U),OP=$P(^(NUM),U,2),VAL=$P(^(NUM),U,3)
	. I $S('$D(^UTILITY("DIFGFLD",$J,FLD)):1,1:0) S STP="" Q
	. I @("^UTILITY(""DIFGFLD"",$J,FLD)"_OP_"VAL")
	. E  S STP=""
	Q
	;
SETY	; Sets Y to value of "D" node or value from execution of "C" node
	I TYPE="M",$D(^DD(DIFGDIC,0,"FD",CNUM,"C")) X ^("C")
	I TYPE="F",$D(^DD(DIFGDIC,0,"FD",CNUM,"D")) S Y=^("D")
	I $D(Y),Y'>0 K Y
	E  I $D(Y),'$D(@(^DIC(DIFGDIC,0,"GL")_"Y)")) K Y
	Q
	;