Biror bir masalani yechishning chiziqli bo’lgan algoritmiga dastur tuzishda algoritmdagi keltirilgan ketma-ketliklar asosida operatorlar yoziladi

Exports

MyFunc, MyProc;

begin

end.
Podprogramma nomidan tashqari DLL ga uning tartib nomeri joylashtiriladi: birinchi podprogramma nomeri 0, keyingisi - 1 va xokazo. Dasturchi bu indeksatsiyani o’zgartirishi va 0 dan 32767 gacha nomer qo’yishi mumkin:

Expots

MyFunc index 1, MyProc index 2;
Dasturchi eksport qilinayotgan podprogramma uchun tashqi nom berishi mumkin:

Exports

MyFunc index I name 'NEWFUNC';
CHaqirayotgan dastur eksport qilinayotgan podprogramma tashqi nomi yoki indeksi bo’yicha chaqirishi mumkin.

Misol

Misol tariqasida cmplx modulini kuramiz.

Library Cmplx;

uses
SysUtils, Classes;


{$R *.RES}

type
TComplex = record Re, Im: Real;

end;

function AddC(x, y: TComplex): TComplex; stdcall;

begin

Result.Im := x.Im + y.Im;
Result.Re := x.Re + y.Re end;

function SubC(x, y: TComplex): TComplex;

stdcall;

begin

Result.Im := x.Im - y.Im;
Result.Re := x.Re - y.Re

end;

function MulC(x, u: TComplex): TComplex;

stdcall;

begin
Result.Re := x.Re * y.Re + x.Im * y.Im;
Result.Im := x.Re * y.Im - x.Im * y.Re

end;

function DivC(x, y: TComplex): TComplex;

stdcall;

var
z: Real;

begin

z := sqr(y.Re) + sqr(y.Im);

try
Result.Re := (x.Re * y.Re + x.Im * y.Im)/z;

Result.Im := (x.Re * y.Im - x.Im * y.Re)/z

except

Result.Re := le+309;
Result.Im := le+309

end

end;

Exports