public static void main(string[] args)
{
ulong[] bounds = new ulong[] {
PACKED_1_START,
PACKED_1_END,
PACKED_2_START,
PACKED_2_END,
PACKED_3_START,
PACKED_3_END,
PACKED_4_START,
PACKED_4_END,
PACKED_5_START,
PACKED_5_END,
PACKED_6_START,
PACKED_6_END,
PACKED_7_START,
PACKED_7_END,
};
for (int n = 0; n < bounds.Length; n++)
{
for (ulong l = bounds[n] - 1; l < bounds[n] + 2; l++)
{
long abs = Math.Abs((long)l);
Console.WriteLine(String.Format("number {0} {1} {2} bits: {3} switch: {4} - {5}"
, l.ToString("X")
, l
, Fns.numberOfLeadingZeros(abs)
, bitsneeded((long)l)
, switchon((long)l)
, abs));
}
}
}
public static int switchon(long l)
{
if (l > 0)
{
return(Fns.numberOfLeadingZeros(l));
}
else
{
return(Fns.numberOfLeadingZeros(~l));
}
}
public static int bitsneeded(long l)
{
if (l > 0)
{
return(65 - Fns.numberOfLeadingZeros(l));
}
else
{
return(65 - Fns.numberOfLeadingZeros(~l));
}
}