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...multiply big integer values?
Autor: Mileriam
Homepage: http://www.mediaceta.de
[ Print tip ]  

Tip Rating (10):  
     


type
  
IntNo = record
    
Low32, Hi32: DWORD;
  end;

function Multiply(p, q: DWORD): IntNo;
var
  
x: IntNo;
begin
  asm
    
MOV EAX,[p]
    MUL [q]
    MOV [x.Low32],EAX
    MOV [x.Hi32],EDX
  end;
  Result := x
end;


// Test the above with:
// So kannst du es testen

var
  
r: IntNo;
begin
   
r := Multiply(40000000, 80000000);
   ShowMessage(IntToStr(r.Hi32) + ', ' + IntToStr(r.low32))
end;

 

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