...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::random::gamma_distribution::param_type
// In header: <boost/random/gamma_distribution.hpp> class param_type { public: // types typedef gamma_distribution distribution_type; // public member functions param_type(const RealType & = 1.0, const RealType & = 1.0); RealType alpha() const; RealType beta() const; // friend functions template<typename CharT, typename Traits> std::basic_ostream< CharT, Traits > & operator<<(std::basic_ostream< CharT, Traits > &, const param_type &); template<typename CharT, typename Traits> std::basic_istream< CharT, Traits > & operator>>(std::basic_istream< CharT, Traits > &, param_type &); bool operator==(const param_type &, const param_type &); bool operator!=(const param_type &, const param_type &); };
param_type
public member functionsparam_type(const RealType & alpha = 1.0, const RealType & beta = 1.0);
Constructs a param_type
object from the "alpha" and "beta" parameters.
Requires: alpha > 0 && beta > 0
RealType alpha() const;
Returns the "alpha" parameter of the distribution.
RealType beta() const;
Returns the "beta" parameter of the distribution.
param_type
friend functionstemplate<typename CharT, typename Traits> std::basic_ostream< CharT, Traits > & operator<<(std::basic_ostream< CharT, Traits > & os, const param_type & param);
Writes the parameters to a std::ostream
.
template<typename CharT, typename Traits> std::basic_istream< CharT, Traits > & operator>>(std::basic_istream< CharT, Traits > & is, param_type & param);
Reads the parameters from a std::istream
.
bool operator==(const param_type & lhs, const param_type & rhs);
Returns true if the two sets of parameters are the same.
bool operator!=(const param_type & lhs, const param_type & rhs);
Returns true if the two sets fo parameters are different.