34 	u32 ac = 0;  in base64_encode()  local
40 		ac = (ac << 8) | src[i];  in base64_encode()
44 			*cp++ = base64_table[(ac >> bits) & 0x3f];  in base64_encode()
48 		*cp++ = base64_table[(ac << (6 - bits)) & 0x3f];  in base64_encode()
71  *	   or -1 if the string isn't a valid base64 string.
75 	u32 ac = 0;  in base64_decode()  local
84 			ac = (ac << 6);  in base64_decode()
91 			return -1;  in base64_decode()
92 		ac = (ac << 6) | (p - base64_table);  in base64_decode()
96 			*bp++ = (u8)(ac >> bits);  in base64_decode()
99 	if (ac & ((1 << bits) - 1))  in base64_decode()
100 		return -1;  in base64_decode()