HP 33s Scientific manual Goes to the vector-addition routine

Program Lines:			Description
(In ALG mode)
  %
 - "
	! %	Saves X + U in X.
	 #
	- &
	! &	Saves V + Y in Y.
	 '
	- $
	! '	Saves Z + W in Z.
 ! 		Loops back for polar conversion and display/input.
Checksum and length: 6ED7			33
  		Defines the beginning of the vector–subtraction
		routine.
 .		Multiplies X, Y and Z by (–1) to change the sign.
	!º %
	!º &
	!º '
	! 	Goes to the vector–addition routine.
Checksum and length: 5FC1			30

     &  º $  .   '  º #  !  !   '  º " .   %  º $

Defines the beginning of the cross–product routine.

Calculates (YW – ZV), which is the X component.

Mathematics Programs 15–5