HP HP-16C - Example

78 Section 7: Programming Basics
—
SL SR n RRn MASKL MASKR RM
. . .
LJ ASR ) RLC M RRC ) RLCn RRCn wB \ ABS DBLR
x%(i) [ sHow
AnEEED S
G LBL DSZ 1SZ 1/x SF i CF F7
[— SETCOMPL -/
(i) PRGM REG PREFIX WINDOW UNSGN
B e
| 2518 iRd PSE CLX X<y l<0| ‘l>\
WSIZE FLOAT MEM STATUS EEX
@ i
== P 2 D 21 =3
HEWLETT-PACKARD
42: Fourth Row, Second Column
Example
The following program utilizes the “double” functions (explained on
pages 52-55) to multiply large numbers of any base and obtain an
exact decimal answer up to 39 digits long (that is, up to and not
including 10'® x 254). The double-sized result is placed into regis-
ters X (the most significant digits) and Y (the 19 least significant
digits).
Since the “double” functions operate internally in binary, it is nec-
essary to perform the extra manipulations below (dividing by 10'°,
the largest exponent of 10 that can be held in one register) to obtain
a meaningful decimal answer.
Keystrokes Display
CLEAR Sets program memory to
line 000 but does not
clear it. (This function
only clears in Program
mode.)
(g](P/R] 000- Program mode (PRGM
annunciator displayed).
(g](LBL]1 001-43,22, 1