private static superlong add(superlong op1, superlong op2)
{
checked
{
superlong result;
result._hi = op1._hi + op2._hi;
try
{
result._lo = op1._lo + op2._lo;
}
catch (OverflowException)
{
result._lo = unchecked (op1._lo + op2._lo);
result._hi++;
}
return(result);
}
}
public static int TestEntryPoint()
{
superlong v1;
superlong v2;
v1._hi = 0x8000000000000000;
v1._lo = 0x0000000000000000;
v2._hi = 0x7fffffffffffffff;
v2._lo = 0xffffffffffffffff;
superlong sum = superlong.add(v1, v2);
if (sum._hi != 0xffffffffffffffff || sum._lo != 0xffffffffffffffff)
{
Console.WriteLine("Failed.");
return(1);
}
v1._hi = 0x8000000000000000;
v1._lo = 0x0000000000000000;
v2.Assign(v1);
try
{
sum = superlong.add(v1, v2);
}
catch (OverflowException)
{
v1._hi = 0x1234567876543210;
v1._lo = 0xfdcba98789abcdef;
v2._hi = 0xedcba98789abcdee;
v2._lo = 0x1234567876543210;
sum = superlong.add(v1, v2);
if (sum._hi != 0xffffffffffffffff || sum._lo != 0x0fffffffffffffff)
{
Console.WriteLine("Failed (3).");
return(1);
}
Console.WriteLine("Passed!");
return(100);
}
Console.WriteLine("Failed (2).");
return(1);
}
private void Assign(superlong v)
{
_hi = v._hi; _lo = v._lo;
}