$Bitpacking
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Back to local compiler directives.
The local compiler directive $BITPACKING:
- is used to compress records;
- knows the switches ON and OFF;
- tells the compiler whether it should use bitpacking or not when it encounters the Packed keyword for a structured type.
Example:
...
{$BITPACKING ON}
...
Type
TMyRecord = packed record
B1, B2, B3, B4 : Boolean;
end;
Note: 1. The local compiler directive $BITPACKING is ignored in MacPas compiler mode. In the MacPas compiler mode, all packed records are aligned to bit addresses.