unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Math;

type

  TRec = record
    case NumType: boolean of
      True:  (Fl: single);
      False: (Int: integer);
  end;

  TForm1 = class(TForm)
    lbNum: TLabel;
    lbMan: TLabel;
    Label1: TLabel;
    Label2: TLabel;
    lbExp: TLabel;
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    Number: TRec;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var
  e: integer;
  m: Extended;
begin
  Number.Int := $41BC0000;
  lbNum.Caption := FloatToStr(Number.Fl);
end;

end.