static_constant.hpp File Reference

#include <boost/units/config.hpp>

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Macros
#define	BOOST_UNITS_STATIC_CONSTANT(name, type)
	A convenience macro that allows definition of static constants in headers in an ODR-safe way. More...

Macro Definition Documentation

#define BOOST_UNITS_STATIC_CONSTANT	(		name,
			type
	)

Value:

template<bool b>                                            \
struct name##_instance_t                                    \
{                                                           \
    static const type instance;                             \
};                                                          \
                                                            \
namespace                                                   \
{                                                           \
    static const type& name = name##_instance_t<true>::instance;   \
}                                                           \
                                                            \
template<bool b>                                            \
const type name##_instance_t<b>::instance

A convenience macro that allows definition of static constants in headers in an ODR-safe way.