Swap

Swap high and low bytes/words of a variable

Declaration

Source position: systemh.inc line 915

  function Swap(X: Word) : Word;
  function Swap(X: Integer) : Integer;
  function Swap(X: LongInt) : LongInt;
  function Swap(X: Cardinal) : Cardinal;
  function Swap(X: QWord) : QWord;
  function Swap(X: Int64) : Int64;

Description

Swap swaps the high and low order bytes of X if X is of type Word or Integer, or swaps the high and low order words of X if X is of type Longint or Cardinal. The return type is the type of X

Errors

None.

See also

Name	Description
Hi	Return high byte/word/nibble of value.
Lo	Return low nibble/byte/word of value.

Example

Program Example69;
{ Program to demonstrate the Swap function. }
Var W : Word;
    L : Longint;
begin
  W:=$1234;
  W:=Swap(W);
  if W<>$3412 then
    writeln ('Error when swapping word !');
  L:=$12345678;
  L:=Swap(L);
  if L<>$56781234 then
    writeln ('Error when swapping Longint !');
end.