On Thursday 07 July 2005 05:39, Peter Vreman wrote: > > shouldn't it implement inv(v,-1) in exactly the same way it > > implements v:=v-1? > > The problem is what type do you give to -1. In the old situation the > -1 was converted to the same type as v -> longword.
Which should trigger a range check already, because -1 can't be represented as valid longword. Personal note: Maybe there was a reason why Borland Pascal didn't do range checks on Inc/Dec. The only time I ever used it was a checksum calculation which was modulo anyway. Any other time I use the usual operators. So especially with the "added" overflow check I think, Inc and Dec are pretty useless functions, because the don't do anything you can't accomplish by using "+" or "-" unless you have very_long_and_complex_variable_names and want to save some typing work. Vinzent. -- public key: http://www.t-domaingrabbing.ch/publickey.asc _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
