PtrDiffType

(Under construction.)

Synopsis

     type
       PtrDiffType  { built-in type }

Description

PtrDiffType is a (signed) integer type to represent the difference between two positions in memory. It is not needed except for rather low-level purposes.

Conforming to

PtrDiffType is a GNU Pascal extension.

Example

     program PtrDiffTypeDemo;
     var
       a: array [1 .. 10] of Integer;
       d: PtrDiffType;
       p, q: ^Integer;
     begin
       p := @a[1];
       q := @a[4];
       {$X+}
       d := q - p
     end.

See also