| Description |
The PExtended type is a pointer to a Extended value.
Pointer arithmetic, such as Inc, Dec can be used on it, for example to navigate a block of Extended values, as in the example.
|
|
| Related commands |
| Dec |
|
Decrement an ordinal variable |
| Extended |
|
The floating point type with the highest capacity and precision |
| Inc |
|
Increment an ordinal variable |
|
|
|
| Example code : Store 3 Extended values in memory and navigate through them |
var
extPtr : PExtended;
begin
// Allocate storage for three extended variables
GetMem(extPtr, 3 * SizeOf(Extended));
// Fill out these extended variables
extPtr^ := 123.45;
Inc(extPtr);
extPtr^ := 2.9;
Inc(extPtr);
extPtr^ := 87654321;
// Now display these values
Dec(extPtr, 2);
ShowMessageFmt('Value 1 = %f',[extPtr^]);
Inc(extPtr);
ShowMessageFmt('Value 2 = %f',[extPtr^]);
Inc(extPtr);
ShowMessageFmt('Value 3 = %f',[extPtr^]);
end;
|
| Show full unit code |
Value 1 = 123.45
Value 2 = 2.90
Value 3 = 87654321.00
|
|