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1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
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2 // unit/quantity manipulation and conversion
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3 //
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4 // Copyright (C) 2003-2008 Matthias Christian Schabel
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5 // Copyright (C) 2008 Steven Watanabe
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6 //
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7 // Distributed under the Boost Software License, Version 1.0. (See
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8 // accompanying file LICENSE_1_0.txt or copy at
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9 // http://www.boost.org/LICENSE_1_0.txt)
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10
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11 #ifndef BOOST_UNITS_UNITS_FWD_HPP
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12 #define BOOST_UNITS_UNITS_FWD_HPP
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13
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14 ///
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15 /// \file
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16 /// \brief Forward declarations of library components.
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17 /// \details Forward declarations of units library - dimensions, systems, quantity and string components.
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18 ///
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19
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20 #ifndef BOOST_UNITS_DOXYGEN
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21
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22 #include <string>
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23
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24 namespace boost {
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25
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26 namespace units {
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27
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28 template<typename T,typename V> struct dim;
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29 template<typename T> struct is_dim;
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30
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31 struct dimensionless_type;
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32 template<class Item,class Next> struct list;
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33 template<typename Seq> struct make_dimension_list;
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34
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35 template<class T> struct is_dimensionless;
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36 template<class S1,class S2> struct is_implicitly_convertible;
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37 template<class T> struct get_dimension;
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38 template<class T> struct get_system;
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39
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40 template<class Y> class absolute;
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41
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42 template<class Dim,class System, class Enable=void> class unit;
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43
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44 template<long Base, class Exponent> struct scale;
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45
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46 template<class BaseUnitTag> struct base_unit_info;
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47 template<class System> struct dimensionless_unit;
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48 template<class T> struct is_unit;
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49 template<class T,class Dim> struct is_unit_of_dimension;
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50 template<class T,class System> struct is_unit_of_system;
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51
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52 template<class Unit,class Y = double> class quantity;
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53
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54 template<class System,class Y> struct dimensionless_quantity;
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55 template<class T> struct is_quantity;
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56 template<class T,class Dim> struct is_quantity_of_dimension;
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57 template<class T,class System> struct is_quantity_of_system;
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58
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59 template<class From,class To> struct conversion_helper;
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60
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61 template<class T> std::string to_string(const T&);
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62 template<class T> std::string name_string(const T&);
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63 template<class T> std::string symbol_string(const T&);
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64 template<class T> std::string raw_string(const T&);
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65 template<class T> std::string typename_string(const T&);
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66
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67 } // namespace units
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68
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69 } // namespace boost
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70
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71 #endif
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72
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73 #endif // BOOST_UNITS_UNITS_FWD_HPP
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