sigma0 51 lib/crypto/sha256.c #define sigma0(x) (ROTR(x,7) ^ ROTR(x,18) ^ ((x)>>3)) sigma0 50 source4/heimdal/lib/hcrypto/sha256.c #define sigma0(x) (ROTR(x,7) ^ ROTR(x,18) ^ ((x)>>3))