private UInt32[] MakeTable(UInt32 polynomial, int offset)
{
UInt32[] table = new UInt32[256];
UInt64 c, x, rem;
for (int i = table.GetLowerBound(0); i <= table.GetUpperBound(0); i++)
{
c = ((UInt64)i) << offset;
rem = 0;
for (int part = 8; --part >= 0;)
{
x = c >> 56;
c <<= 8;
rem ^= x;
for (int j = 8; --j >= 0;)
{
rem = (rem & (0x01u)) != 0 ? polynomial ^ (rem >> 1) : (rem >> 1);
}
}
table[i] = (UInt32)rem;
}
return(table);
}