boost::log::sinks::syslog::custom_severity_mapping — Customizable severity level mapping.
// In header: <boost/log/sinks/syslog_backend.hpp> template<typename AttributeValueT = int> class custom_severity_mapping : public basic_custom_mapping< level, AttributeValueT > { public: // construct/copy/destruct explicit custom_severity_mapping(attribute_name const &); };