iTextSharp.text.pdf.codec.PngWriter.make_crc_table C# (CSharp) Method

        private static void make_crc_table()
        {
            if (crc_table != null)
                return;
            uint[] crc2 = new uint[256];
            for (uint n = 0; n < 256; n++) {
                uint c = n;
                for (int k = 0; k < 8; k++) {
                    if ((c & 1) != 0)
                        c = 0xedb88320U ^ (c >> 1);
                    else
                        c = c >> 1;
                }
                crc2[n] = c;
            }
            crc_table = crc2;
        }