Hello,
I have noticed strange behaviour. I have .NET CF project written partly in
VB, there comes also a set of function written in C#. I have 2 functions for
counting PIN number - both based on the same algorithm - and results are
different. Is there a different pattern in rounding numbers in VB and C#?
Here comes the code:
public static int getPIN(long serialNo)
{
int myPIN, byteA, byteB, byteC;
long myLongValue;
if (serialNo > 999999)
{
myPIN = 0;
}
else
{
byteA = System.Convert.ToInt32((((serialNo / 1000) % 10) * 10) +
((serialNo / 10000) % 10));
byteB = System.Convert.ToInt32((((serialNo / 100000) % 10) * 10) +
((serialNo / 10) % 10));
byteC = System.Convert.ToInt32(((serialNo % 10) * 10) + ((serialNo /
100) % 10));
myLongValue = (byteA * byteA) + (byteB * byteB) + (byteC * byteC);
myPIN = System.Convert.ToInt32(myLongValue % 10000);
if (myPIN == 0) myPIN = 4646;
}
return myPIN;
}
Public Shared Function getPIN(ByVal SerialNo As Long) As Integer
Dim myPIN, byteA, byteB, byteC As Integer
Dim myLongValue As Long
If SerialNo > 999999 Then
myPIN = 0
Else
byteA = System.Convert.ToInt32((((SerialNo / 1000) Mod 10) *
10) + ((SerialNo / 10000) Mod 10))
byteB = System.Convert.ToInt32((((SerialNo / 100000) Mod 10)
* 10) + ((SerialNo / 10) Mod 10))
byteC = System.Convert.ToInt32(((SerialNo Mod 10) * 10) +
((SerialNo / 100) Mod 10))
myLongValue = (byteA * byteA) + (byteB * byteB) + (byteC *
byteC)
myPIN = System.Convert.ToInt32(myLongValue Mod 10000)
If myPIN = 0 Then
myPIN = 4646
End If
End If
Return myPIN
End Function