signum()
The mathematical sign function.
-1 if a < 0.
0 if a = 0.
1 if a > 0.
Parameters
|
Parameter |
Description |
|
a |
Numerical value. |
Examples
|
Parameter a |
Result |
|
-7 |
-1 |
|
0 |
0 |
|
5 |
1 |
|
mystring |
0 (Note: An implicit type conversion of each string to the numerical value 0 takes place internally.) |