So you think you know C? (2016)(wordsandbuttons.online)

    inline uint64_t makeRemainderMask( ptrdiff_t missingLanes )
    {
        // This is not a branch, compiles to conditional move
        missingLanes = std::max( missingLanes, (ptrdiff_t)0 );
        // Make a mask of 8 bytes
        // No need to clip for missingLanes <= 8 because the shift is already good, results in zero
        uint64_t mask = ~(uint64_t)0;
        mask >>= missingLanes * 8;
        return mask;
    }

    cast(T)x;

     int16_t a( int16_t a,  int16_t b) { return a*b; }
    uint16_t b(uint16_t a, uint16_t b) { return a*b; }
     int32_t c( int32_t a,  int32_t b) { return a*b; }
    uint32_t d(uint32_t a, uint32_t b) { return a*b; }

  int x, y;
  x ^= y ^= x ^= y;