# IB Statements/sgn

### From CometWiki

**SGN function**

**Syntax:** SGN(numeric-argument)

**Discussion:** The SGN function returns the sign (positive, negative or zero) of a numeric value according to the following chart:

Numeric-argument Value returned ================================== positive 1 zero 0 negative 1-

The numeric-argument may be a numeric constant, a single-element numeric variable, a numeric array element, a numeric expression, or a numeric function.

The intermediate result of the SGN function is stored in a numeric accumulator with a length and precision of 16.0 If this intermediate result is moved to a receiving numeric variable, its precision is automatically adjusted to the defined precision of that variable.

**Example:** A = SGN(B)

In the above example, the sign of the value stored in the variable B is moved to the variable A. For example, if B equals 25, A will equal 1. Likewise, if B equals -25, A will equal -1, and if B equals 0, A will also equal 0.