HP 35s Scientific Calculator - Manual (Page 10)

8 Contents
Clearing One or More Programs.......................................13-23
The Checksum ................................................................13-23
Nonprogrammable Functions ................................................13-24
Programming with BASE .......................................................13-24
Selecting a Base Mode in a Program.................................13-25
Numbers Entered in Program Lines ....................................13-25
Polynomial Expressions and Horner's Method..........................13-26
14.Programming Techniques ..........................................14-1
Routines in Programs ..............................................................14-1
Calling Subroutines (XEQ, RTN) ..........................................14-1
Nested Subroutines ...........................................................14-2
Branching (GTO) ...................................................................14-4
A Programmed GTO Instruction ..........................................14-5
Using GTO from the Keyboard ...........................................14-5
Conditional Instructions...........................................................14-6
Tests of Comparison (x?y, x?0)...........................................14-7
Flags ...............................................................................14-9
Loops .................................................................................14-16
Conditional Loops (GTO) ................................................14-17
Loops with Counters (DSE, ISG) ........................................14-18
Indirectly Addressing Variables and Labels..............................14-20
The Variables "I" and "J" ................................................... 14-20
The Indirect Address, (I) and (J) .........................................14-21
Program Control with (I)/(J) ................................................ 14-23
Equations with (I)/(J) .......................................................... 14-23
Unnamed indirect variables..............................................14-23