Multiplication assignment operator
<mp-units/framework/quantity.h>
template</* implementation-defined */ Q2>
requires detail::ScalarValuePreservingTo<typename Q2::rep, rep> && requires(rep& a, const Q2::rep b) {
      { a *= b } -> std::same_as<rep&>;
    }
constexpr
quantity&
operator*=(Q2 const& other) &;
| Name | Description | 
|---|---|
| other | The right operand |