Description:
Judge whether the specified data is a positive number, a negative number or 0.
Syntax:
sign(number)
Note:
If number is a positive value, return 1; If it is a negative value, return -1; If it is 0, return 0.
Parameter:
|
number |
A numeric value. |
Return value:
Integer
Example:
|
sign(-10) |
-1 |
|
sign(30) |
1 |
|
sign(0) |
0 |