code: func MustAdd(b []uint32, rh []uint32) {
  	if len(b) != len(rh) {
  		panic(ErrUnequallySizedSlices)
  	}
  
  	carry := false
  
  	for i := range b {
  		v, c := FullAdd(b[i], rh[i], carry)
  		b[i] = uint32(v)
  		carry = c
  	}
  }
docs: // MustAdd adds the given big ints together.