Am 07.04.2017 um 16:15 schrieb Marco van de Voort: > In our previous episode, African Wild Dog said: >> Which integer types have their size dependent on platform? >> E.g. in Delphi, LongInt can 32 or 64 bits depending on the platform. > > In Delphi they retroactively equated longint to C long, being 32-bit on > 64-bits windows and 64-bit on Linux. The Delphi Linux compiler is btw a > different compiler than windows. > > On FPC it is always 32-bit. Ptrint and ptruint scale with pointer size, and > integer depends on compilation mode, 16 or 32-bit. > > For the C compiler that FPC corresponds with (usually gcc), there are types > that correspond with C types in unit ctypes. > > Maybe some of the new ultra small targets like AVR make exceptions,
No. The only difference is that the smallest integer operation is 8 bit: On a 32 bit target, <byte>*<byte> is evaluated as a longint, on avr, it is evaluated as 8 bit operation. However, we introduced ALUSInt/ALUUInt, it is an int type which scales with the ALU size of the CPU as PtrInt/PtrUInt are larger than the ALU on AVR. > but > those are the general rules. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
