# ILEN

Inquiry Intrinsic Function (Generic): Returns the length (in bits) of the two's complement representation of an integer.

result = ILEN (i)

i | Must be of type integer.

## Results

The result type and kind are the same as i. The result value is (LOG2( i+ 1 )) if i is not negative; otherwise, the result value is (LOG2( - i)).

## Example

ILEN (4) has the value 3.

ILEN (-4) has the value 2.

Parent topic: H to I