Intel® Fortran Compiler 18.0 Developer Guide and Reference

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.

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