ROTL_SHA1
#define SHA1_EXPAND(W, i) (W[i & 15] = ROTL_SHA1((W[i & 15] ^ W[(i - 14) & 15] ^ W[(i - 8) & 15] ^ W[(i - 3) & 15]), 1))
A_ = (e + ROTL_SHA1(a, 5) + F(b, c, d) + K + data); \
C_ = ROTL_SHA1(b, 30); \