RND
int x = RND(rbuf, sizeof(rbuf), &rleft) % (len - i);
(*pw)[i] = classes[j].str[RND(rbuf, sizeof(rbuf), &rleft)
RND(A, B, C, D, E, F, G, H, TJ, Wi, Wj, FF0, GG0)
RND(A, B, C, D, E, F, G, H, TJ, Wi, Wj, FF1, GG1)
RND(S[(64 - i) % 8], S[(65 - i) % 8], \
RND(S[(80 - i) % 8], S[(81 - i) % 8], \