code: func MustCmp(lh, rh []uint32) int {
  	if len(lh) != len(rh) {
  		panic(ErrUnequallySizedSlices)
  	}
  
  	// put LSB first
  	rlh := make([]uint32, len(lh))
  	copy(rlh, lh)
  	ReverseU(rlh)
  
  	rrh := make([]uint32, len(rh))
  	copy(rrh, rh)
  	ReverseU(rrh)
  
  	for i := range rlh {
  		switch {
  		case rlh[i] < rrh[i]:
  			return -1
  		case rlh[i] > rrh[i]:
  			return 1
  		}
  	}
  	return 0
  }
docs: // MustCmp compares the given big ints with each other.