NAME
     ILEN

SYNOPSIS
     USE HPF_LIBRARY

     ILEN(I)

DESCRIPTION
     ILEN returns one less than  the  length,  in  bits,  of  the
     two's-complement representation of an integer.

ARGUMENTS
     I    must be of type integer.

RESULT TYPE
     Same as I

SEE ALSO
     LEADZ, POPCNT, POPPAR.,