180     mpreal& operator=(const mpreal& v);  variable
181     mpreal& operator=(const mpf_t v);  variable
182     mpreal& operator=(const mpz_t v);  variable
183     mpreal& operator=(const mpq_t v);  variable
184     mpreal& operator=(const long double v);  variable
185     mpreal& operator=(const double v);          variable
186     mpreal& operator=(const unsigned long int v);  variable
187     mpreal& operator=(const unsigned int v);  variable
188     mpreal& operator=(const long int v);  variable
189     mpreal& operator=(const int v);  variable
190     mpreal& operator=(const char* s);  variable
191     mpreal& operator=(const std::string& s);  variable