( GCD-Algorithm . 0 = GBP := 0 & GCD-Algorithm . 1 = SBP := 7 & GCD-Algorithm . 2 = saveIC (SBP,RetIC) & GCD-Algorithm . 3 = goto 2 & GCD-Algorithm . 4 = halt SCMPDS & GCD-Algorithm . 5 = (SBP,3) <=0_goto 9 & GCD-Algorithm . 6 = (SBP,6) := (SBP,3) & GCD-Algorithm . 7 = Divide (SBP,2,SBP,3) & GCD-Algorithm . 8 = (SBP,7) := (SBP,3) & GCD-Algorithm . 9 = (SBP,(4 + RetSP)) := (GBP,1) & GCD-Algorithm . 10 = AddTo (GBP,1,4) & GCD-Algorithm . 11 = saveIC (SBP,RetIC) & GCD-Algorithm . 12 = goto (- 7) & GCD-Algorithm . 13 = (SBP,2) := (SBP,6) & GCD-Algorithm . 14 = return SBP )