rotr32
_y.D[0] = rotr32(bswap32(_y.D[0] * invoddC - sameA), _x.D[1]) ^ _x.D[0];
_y.D[1] = rotr32(bswap32(_y.D[1] * invoddD - sameB), _x.D[0]) ^ _x.D[1];
((rotl32((uint32)(x), 8) & 0x00ff00ff) | (rotr32((uint32)(x), 8) & 0xff00ff00))