public void DivideRounded()
{
// Test division with a cleanly divided number.
UInt256 dividend = 30;
UInt256 divisor = 3;
UInt256 result = UInt256.DivideRounded(dividend, divisor);
Assert.Equal(10, result);
// Test division with remainder (under midpoint, rounds down).
dividend = 29;
divisor = 4;
result = UInt256.DivideRounded(dividend, divisor);
Assert.Equal(7, result);
// Test division with remainder (at midpoint, rounds up).
dividend = 30;
divisor = 4;
result = UInt256.DivideRounded(dividend, divisor);
Assert.Equal(8, result);
// Test division with remainder (over midpoint, rounds up).
dividend = 31;
divisor = 4;
result = UInt256.DivideRounded(dividend, divisor);
Assert.Equal(8, result);
// Test division with zero integer (stays at zero).
dividend = 0;
divisor = 4;
result = UInt256.DivideRounded(dividend, divisor);
Assert.Equal(0, result);
}