On Tue, Oct 30, 2012 at 10:10 PM, Mark Morgan Lloyd <markmll.fpc-pas...@telemetry.co.uk> wrote: > ik wrote: >> >> Hello, >> >> I have the following function: >> >> function OneToTwoComplement(AValue: QWord): QWord; >> begin >> Result := (AValue xor $FFFFFFFFFFFFFFFF) + 1; >> end; >> >> What am I missing here that makes the compiler complain about "Range >> check error while evaluating constants" ? >> Why doesn't it complain on : >> >> function OneToTwoComplement(AValue: Int64): Int64; >> begin >> Result := (Abs(AValue) xor $FFFFFFFFFFFFFFFF) + 1; >> end; > > > What happens in the first case if you cast that constant to a QWord?
The compiler stop reporting warnings > > -- > Mark Morgan Lloyd > markMLl .AT. telemetry.co .DOT. uk > > [Opinions above are the author's, not those of his employers or colleagues] > > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/mailman/listinfo/fpc-pascal _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
