Returns the sign of a given number. Returns 1 for a positive number, -1 for a negative number, and 0 (zero) if the number is 0.

**Sample Usage**

SIGN(10)

SIGN(-10)

SIGN(C5)

**Syntax**

SIGN(number)

- number - The number for which the sign is to be examined.

**Examples**

SIGN(10) returns the sign of 10 i.e 1.

SIGN(-10) returns the sign of 10 i.e -1.

SIGN(C5) returns the tangent of the number contained in C5.