R0                146 ext/standard/crypt_sha256.c #define R0(x) (CYCLIC (x, 7) ^ CYCLIC (x, 18) ^ (x >> 3))
R0                171 ext/standard/crypt_sha512.c #define R0(x) (CYCLIC (x, 1) ^ CYCLIC (x, 8) ^ (x >> 7))