Examples; Examples: Register Operations - HP -15C Owner's Handbook Manual

Section 10: The Index Register and Loop Control
False (nnnnn > xxx)
loop
For e: given nnnnn.xxxyy, decrement nnnnn to nnnnn - yy, compare
it to xxx, and skip the next program line if the new value satisfies nnnnn ≤
xxx. This allows you to exit a loop at this point when nnnnn becomes less
than or equal to xxx.
For example, loop iterations will alter these control numbers as follows:
Operation
I
e

Examples

Examples: Register Operations

Storing and Recalling
Keystrokes
´ CLEAR Q
12.3456
O V
7 ¤
O%
lV
instruction
´sV
t.
Instruction
0 1
0.00602 2.00602
6.00002 4.00002
Display
12.3456
12.3456 Stores in R
2.6458
2.6458
12.3456 Recalls contents of R
True (nnnnn  xxx)
1
Iterations
2
4.00602
2.00002
Clears all storage registers.
I
Storage in R
(R = 12.3456).
I
exit loop
3
6.00602
(skip next
line)
0.00002
(skip next
line)
.
by indirect addressing
.2
.
I
111
4
8.00602