public static int Log2(int x)
{
if (x <= 0)
{
ExceptionUtil.ThrowArgumentOutOfRangeException("x", "must be positive");
}
if (x == 1)
{
return(0);
}
return(UInt32Util.HighestBit((uint)x));
}
public static int HighestBit(int x) => UInt32Util.HighestBit((uint)x);