Type Switch
Syntax {$REALCOMPATIBILITY ON} or {$REALCOMPATIBILITY OFF}
Default {$REALCOMPATIBILITY OFF}
Scope Local
In the default {$REALCOMPATIBILITY
OFF} state, the generic Real type is equivalent to Double.
In the {$REALCOMPATIBILITY ON}
state, Real is equivalent to Real48.
The REALCOMPATIBILITY
switch provides backward compatibility for legacy code in which Real is used to
represent the 6-byte real type now called Real48. In new code, use Real48 when
you want to specify a 6-byte real.
Double is the preferred real type for most purposes.