ILEN

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

Syntax

result = ILEN (i)

i
Must be of type integer.

Results

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

Examples

ILEN (4) has the value 3.
ILEN (-4) has the value 2.