boost serialization of mpfr_float

Question

I would like to serialize a custom class containing an boost::multiprecision::mpfr_float as a member. It says here in the Boost.Serialization documentation that a type T<

Answer 1

The passthrough support implies that you have to add the serialization for the backend type, indeed.

You can use the same approach as I showed in this answer:

• How to de/serialize a map with template class using boost::multiprecision::mpq_rational

where I show how to (de)serialize mpq_rational