Quoting Vincent Snijders <[EMAIL PROTECTED]>: > C Western schreef: > > ð£ÔÒ ëÏÓÁÒÅ×ÓËÉÊ wrote: > >>> In the math unit are the CompareValue functions only for signed > >>> integers. Why not for DWORD and QWORD? > >> > >> I guess, that it's Delphi mimicing implementation (because it is > >> Delphi-like). > >> > >> And it can be tricky to distinguish signed and unsigned expression > >> values. > >> > >> Like, > >> a: qword; > >> a-1 --- ??? (anyone may know for sure that a-1>0 and want to subtract > >> one) > >> > >> I guess it's something like that. > > > > If you check <http://www.freepascal.org/mantis/view.php?id=8448> you can > > see this bug in action - the fpcadds and math unit provide signed and > > unsigned versions of CompareValue, but the correct one is not always > > chosen. > > > > What a lousy compiler we use! ;-) > > Do you have a testprogram, so I can make a fpc bug report?
I think this is inherent in the language design, as it is too easy to convert between signed and unsigned integers. For example should the call: CompareValue(0,0) use the signed or unsigned version? Colin _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
