iTextSharp.text.pdf.qrcode.GF256.GF256 C# (CSharp) Method

        private GF256(int primitive) {
            expTable = new int[256];
            logTable = new int[256];
            int x = 1;
            for (int i = 0; i < 256; i++) {
                expTable[i] = x;
                x <<= 1; // x = x * 2; we're assuming the generator alpha is 2
                if (x >= 0x100) {
                    x ^= primitive;
                }
            }
            for (int i = 0; i < 255; i++) {
                logTable[expTable[i]] = i;
            }
            // logTable[0] == 0 but this should never be used
            zero = new GF256Poly(this, new int[] { 0 });
            one = new GF256Poly(this, new int[] { 1 });
        }