#include <stdint.h>
struct bits {
    uint8_t u_         : 1;
    uint8_t k_           : 1;
    uint8_t c_           : 1;

    uint8_t x_     : 1;
    uint8_t b_           : 1;

    uint8_t ns_     : 1;
    uint8_t ms_ : 1;
    uint8_t as_   : 1;
    uint8_t /*padding1*/ : 0;

    uint8_t st_       : 3;
    uint8_t su_      : 1;
    uint8_t ig_      : 1;

    uint8_t h_      : 1;
    uint8_t in_ : 1;

    uint8_t pad2_  : 1;


    bits_t(uint8_t u, uint8_t k, uint8_t c, uint8_t x, uint8_t b,
        uint8_t n, uint8_t m, uint8_t a, uint8_t s, uint8_t i, bool h, bool in)
    : u_        {u}
    , k_          {k}
    , c_          {c}
    , x_    {x}
    , b_          {b}
    , ns_    {n}
    , ms_{m}
    , as_  {a}

    , st_          { 0 }
    , su_         {s}
    , ig_         {i}
    , h_           {h}
    , in_          {in}
    , pad2_           {0} // carefully initialize all bits
    {}
} ;