static void unpack_roq_cell(roq_cell *cell, uint8_t u[4*3])
{
    memcpy(u  , cell->y, 4);
    memset(u+4, cell->u, 4);
    memset(u+8, cell->v, 4);
}
['static void unpack_roq_cell(roq_cell *cell, uint8_t u[4*3])\n{\n    memcpy(u  , cell->y, 4);\n    memset(u+4, cell->u, 4);\n    memset(u+8, cell->v, 4);\n}']