24 static uint8_t gfmul(uint8_t a, uint8_t b)  in gfmul()  argument
28 	while (b) {  in gfmul()
29 		if (b & 1)  in gfmul()
32 		b >>= 1;  in gfmul()
38 static uint8_t gfpow(uint8_t a, int b)  in gfpow()  argument
42 	b %= 255;  in gfpow()
43 	if (b < 0)  in gfpow()
44 		b += 255;  in gfpow()
46 	while (b) {  in gfpow()
47 		if (b & 1)  in gfpow()
50 		b >>= 1;  in gfpow()