Function auto_cpu_timer

extern/boost/boost/timer/timer.hpp:91–95

#2

    explicit auto_cpu_timer(short places = default_places);                          // #1
             auto_cpu_timer(short places, const std::string& format);                // #2
    explicit auto_cpu_timer(const std::string& format);                              // #3
             auto_cpu_timer(std::ostream& os, short places,
                            const std::string& format)                               // #4
                                   : m_places(places), m_os(&os), m_format(format)
                                   { start(); }
    explicit auto_cpu_timer(std::ostream& os, short places = default_places);        // #5
             auto_cpu_timer(std::ostream& os, const std::string& format)             // #6
                                   : m_places(default_places), m_os(&os), m_format(format)