delta_time.hpp

#ifndef BLUETOE_LINK_LAYER_DELTA_TIME_HPP
#define BLUETOE_LINK_LAYER_DELTA_TIME_HPP
 
#include <cstdint>
#include <iosfwd>
 
namespace bluetoe {
namespace link_layer {
 
    class delta_time
    {
    public:
        constexpr delta_time() : usec_( 0 )
        {
        }
 
        constexpr explicit delta_time( std::uint32_t usec ) : usec_( usec )
        {
        }
 
        static delta_time usec( std::uint32_t usec );
 
        static delta_time msec( std::uint32_t msec );
 
        static delta_time seconds( int s );
 
        static delta_time now();
 
        void print( std::ostream& ) const;
 
        delta_time& operator+=( const delta_time& rhs );
 
        delta_time& operator-=( const delta_time& rhs );
 
        delta_time& operator*=( unsigned rhs );
 
        unsigned operator/(const delta_time& rhs );
 
        bool operator<( const delta_time& rhs ) const;
 
        bool operator<=( const delta_time& rhs ) const;
 
        bool operator>( const delta_time& rhs ) const;
 
        bool operator>=( const delta_time& rhs ) const;
 
        bool operator==( const delta_time& rhs ) const;
 
        bool operator!=( const delta_time& rhs ) const;
 
        std::uint32_t usec() const;
 
        bool zero() const;
 
        delta_time ppm( unsigned part ) const;
    private:
        std::uint32_t usec_;
    };
 
    std::ostream& operator<<( std::ostream&, const delta_time& );
 
    delta_time operator+( delta_time lhs, delta_time rhs );
 
    delta_time operator-( delta_time lhs, delta_time rhs );
 
    delta_time operator*( delta_time lhs, unsigned rhs );
 
    delta_time operator*( unsigned lhs, delta_time rhs );
 
}
}
#endif