R4
#define R4 w4
#define R4 w4
#define R4 w4
#define R4 x4
#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
#define R4 *long_data++ = *long_drq++
#undef R4
#define R4 *(u_int32_t *)data = *long_data, data += 4, resid -= 4
#undef R4
#define R4 *long_data++ = *long_drq++; count -= 4
#undef R4
#define R4 0x010