S32               162 ext/digest/sha2/sha2.c #define Sigma0_256(x)	(S32(2,  (x)) ^ S32(13, (x)) ^ S32(22, (x)))
S32               163 ext/digest/sha2/sha2.c #define Sigma1_256(x)	(S32(6,  (x)) ^ S32(11, (x)) ^ S32(25, (x)))
S32               164 ext/digest/sha2/sha2.c #define sigma0_256(x)	(S32(7,  (x)) ^ S32(18, (x)) ^ R(3 ,   (x)))
S32               165 ext/digest/sha2/sha2.c #define sigma1_256(x)	(S32(17, (x)) ^ S32(19, (x)) ^ R(10,   (x)))