extern const octet square_s[256], square_si[256];
extern const uint32 square_t[4][256], square_ti[4][256];
extern const uint32 square_u[4][256];
extern const octet square_s[256], square_si[256];
extern const uint32 square_t[4][256], square_ti[4][256];
extern const uint32 square_u[4][256];