Sigma0
#define Sigma0(x) (ROTR(x,2) ^ ROTR(x,13) ^ ROTR(x,22))
#define Sigma0(x) (ROTR(x,28) ^ ROTR(x,34) ^ ROTR(x,39))
#define Sigma0(x) ({ MD32_REG_T ret; \
#define Sigma0(x) (ROTATE((x), 30) ^ ROTATE((x), 19) ^ ROTATE((x), 10))
#define Sigma0(x) ({ SHA_LONG64 ret; unsigned int *r = (unsigned int *)(&(ret)); \
#define Sigma0(x) ({ SHA_LONG64 ret; \
#define Sigma0(x) (ROTR((x), 28) ^ ROTR((x), 34) ^ ROTR((x), 39))