HP HP-32S - Loops with Counters (DSE, ISG)

Loops With Counters (DSE, ISG)
When you want to execute a loop a specific number of times, usethe
DSE (decrement; skip if less than or equal to) or ISG (increment; skip if
greater than) conditional functions in the LOOP menu (Hi loop I).
Each time a LOOP function is executedin a program, it automatically
decrements or increments a counter value stored in a variable. It com
pares the current counter value to a final counter value, then
continues or exits the loop depending on the result.
For a count-down loop, use:
HI loop I {DSE} variable
For a count-up loop, use:
Bl loop I {ISG} variable
These functions accomplish the same thing as a FOR-NEXT loop in
BASIC:
FOR variable = initial-value TO final-value STEP increment
NEXT variable
A DSE instruction is like a FOR-NEXT loop with a negative
increment.
After pressing the menu key for {DSE} or {ISG}, you will be
promptedfor a variable that will contain the loop-control number (de
scribed below).
The Loop-Control Number. The specified variable should contain a
loop-control number
±ccccccc.fffii, where:
• ±ccccccc is the current counter value (1 to 12 digits). This value
changes with loop execution.
• fffis the final counter value (must be three digits). Thisvalue does
not change as the loop runs.
• ii is the interval for incrementing and decrementing (must be two
digits or unspecified). This value does not change. An unspecified
value for ii is assumed to be 01 (increment/decrement by 1).
6: Programming Techniques 101