0b6a182c
 Hu Chunming
添加无鉴权注册和注销
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// Boost.Units - A C++ library for zero-overhead dimensional analysis and
// unit/quantity manipulation and conversion
//
// Copyright (C) 2003-2008 Matthias Christian Schabel
// Copyright (C) 2008 Steven Watanabe
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_UNITS_UNITS_FWD_HPP
#define BOOST_UNITS_UNITS_FWD_HPP
///
/// \file
/// \brief Forward declarations of library components.
/// \details Forward declarations of units library - dimensions, systems, quantity and string components.
///
#ifndef BOOST_UNITS_DOXYGEN
#include <string>
namespace boost {
namespace units {
template<typename T,typename V> struct dim;
template<typename T> struct is_dim;
struct dimensionless_type;
template<class Item,class Next> struct list;
template<typename Seq> struct make_dimension_list;
template<class T> struct is_dimensionless;
template<class S1,class S2> struct is_implicitly_convertible;
template<class T> struct get_dimension;
template<class T> struct get_system;
template<class Y> class absolute;
template<class Dim,class System, class Enable=void> class unit;
template<long Base, class Exponent> struct scale;
template<class BaseUnitTag> struct base_unit_info;
template<class System> struct dimensionless_unit;
template<class T> struct is_unit;
template<class T,class Dim> struct is_unit_of_dimension;
template<class T,class System> struct is_unit_of_system;
template<class Unit,class Y = double> class quantity;
template<class System,class Y> struct dimensionless_quantity;
template<class T> struct is_quantity;
template<class T,class Dim> struct is_quantity_of_dimension;
template<class T,class System> struct is_quantity_of_system;
template<class From,class To> struct conversion_helper;
template<class T> std::string to_string(const T&);
template<class T> std::string name_string(const T&);
template<class T> std::string symbol_string(const T&);
template<class T> std::string raw_string(const T&);
template<class T> std::string typename_string(const T&);
} // namespace units
} // namespace boost
#endif
#endif // BOOST_UNITS_UNITS_FWD_HPP
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