Sign Function
Description
By Eddie Shore, November 2011 (Eddie's Math and Calculator Blog)
The sign function (sometimes called signum) is defined as follows:
{-1 if x < 0
sign(x) = { 0 if x = 0
{ 1 if x > 0
Examples:
- sign(-52): -52 f C, Result: -1
- sign(0): 0 f C, Result: 0
- sign(36): 36 f C, Result: 1
Program Resources
Labels
Name |
Description |
|
C |
Sign Function |
|
0 |
Temporary Label Used |
|
Program
Line |
Display |
Key Sequence |
|
000 |
|
|
|
001 |
42,21,13 |
f LBL C |
|
002 |
43 20 |
g x=0 |
|
003 |
43 32 |
g RTN |
|
004 |
43,30, 2 |
g TEST x<0 |
|
005 |
22 0 |
GTO 0 |
|
006 |
1 |
1 |
|
007 |
43 32 |
g RTN |
|
008 |
42,21, 0 |
f LBL 0 |
|
009 |
1 |
1 |
|
010 |
16 |
CHS |
|
011 |
43 32 |
g RTN |
|