public final boolean isNA ( long i ) { long x = i - ( _start > 0 ? _start : 0 ) ; if ( 0 <= x && x < _len ) return isNA0 ( ( int ) x ) ; throw new ArrayIndexOutOfBoundsException ( getClass ( ) . getSimpleName ( ) + " " + _start + " <= " + i + " < " + ( _start + _len ) ) ; }
Fetch the missing - status the slow way .