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1 : : // *****************************************************************************
2 : : /*!
3 : : \file src/DiffEq/CoupledEq.hpp
4 : : \copyright 2012-2015 J. Bakosi,
5 : : 2016-2018 Los Alamos National Security, LLC.,
6 : : 2019-2021 Triad National Security, LLC.
7 : : All rights reserved. See the LICENSE file for details.
8 : : \brief Functionality for querying information on coupled equations
9 : : \details Functionality for querying information on coupled equations.
10 : : */
11 : : // *****************************************************************************
12 : : #ifndef CoupledEq_h
13 : : #define CoupledEq_h
14 : :
15 : : #include <limits>
16 : :
17 : : namespace walker {
18 : :
19 : : extern ctr::InputDeck g_inputdeck;
20 : :
21 : : template< typename eq, typename coupledeq, typename id >
22 : 43 : void coupledInfo( std::size_t system,
23 : : std::string&& coupled_eq_name,
24 : : std::vector< std::pair< std::string, std::string > > nfo )
25 : : // *****************************************************************************
26 : : // Query and generate info on coupled equations
27 : : //! \tparam eq Tag of the equation that is coupled
28 : : //! \tparam coupledeq Tag of the equation that is coupled to equation 'eq'
29 : : //! \tparam id Tag to access the coupled equation 'eq' (relative) ids, see
30 : : //! tk::grm::couple in Control/Walker/InputDeck/Grammar.h
31 : : //! \param[in] system Relative equation system id of equation 'eq'
32 : : //! \param[in] coupled_eq_name Coupled equation name
33 : : //! \param[in,out] nfo Info vector to augment
34 : : // *****************************************************************************
35 : : {
36 : : static_assert( !std::is_same< eq, coupledeq >::value,
37 : : "Eq and coupled eq must differ" );
38 : :
39 : : const auto& coupled_eq =
40 : : g_inputdeck.template get< tag::param, eq, coupledeq >();
41 : : const auto& coupled_eq_id = g_inputdeck.template get< tag::param, eq, id >();
42 : :
43 : : Assert( coupled_eq.size() == coupled_eq_id.size(),
44 : : "Size mismatch in coupled eq configuration" );
45 : :
46 [ + - ][ + - ]: 86 : nfo.emplace_back( "coupled " + coupled_eq_name + " depvar",
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47 [ + - ]: 43 : std::string( 1, coupled_eq[ system ] ) );
48 : :
49 [ + + ]: 43 : if (coupled_eq[ system ] != '-' )
50 [ + - ][ + - ]: 48 : nfo.emplace_back( "coupled " + coupled_eq_name + " id",
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51 : 24 : std::to_string( coupled_eq_id[ system ] ) );
52 : 43 : }
53 : :
54 : : template< typename eq, typename coupledeq >
55 : : bool coupled( std::size_t system )
56 : : // *****************************************************************************
57 : : // Query if equation 'eq' is coupled to equation 'coupledeq'
58 : : //! \tparam eq Tag of the equation that is coupled
59 : : //! \tparam coupledeq Tag of the equation that is coupled to equation 'eq'
60 : : //! \param[in] system Relative equation system id of equation 'eq'
61 : : //! \return True if equation 'eq' is coupled to equation 'coupledeq'
62 : : // *****************************************************************************
63 : : {
64 : : static_assert( !std::is_same< eq, coupledeq >::value,
65 : : "Eq and coupled eq must differ" );
66 : :
67 : : const auto& coupled_eq =
68 : : g_inputdeck.template get< tag::param, eq, coupledeq >();
69 : :
70 [ + + ][ - + ]: 264 : if (coupled_eq[ system ] != '-' ) return true; else return false;
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71 : : }
72 : :
73 : : template< typename eq, typename coupledeq >
74 : : char depvar( std::size_t system )
75 : : // *****************************************************************************
76 : : // Query dependent variable of equation 'eq' coupled to equation 'coupledq'
77 : : //! \tparam eq Tag of the equation that is coupled
78 : : //! \tparam coupledeq Tag of the equation that is coupled to equation 'eq'
79 : : //! \param[in] system Relative equation system id of equation 'eq'
80 : : //! \return Character (dependent variable) of equation coupled to equation 'eq'
81 : : //! \note If equation 'eq' is not coupled to equation 'coupledeq', '-' is
82 : : //! returned
83 : : // *****************************************************************************
84 : : {
85 : : static_assert( !std::is_same< eq, coupledeq >::value,
86 : : "Eq and coupled eq must differ" );
87 : :
88 : : const auto& coupled_eq =
89 : : g_inputdeck.template get< tag::param, eq, coupledeq >();
90 : :
91 : 132 : return coupled_eq[ system ];
92 : : }
93 : :
94 : : template< typename eq, typename coupledeq, typename id >
95 : : std::size_t system_id( std::size_t system )
96 : : // *****************************************************************************
97 : : // Query relative id of coupled equation of potentially multiple eqs
98 : : //! \tparam eq Tag of the equation that is coupled
99 : : //! \tparam coupledeq Tag of the equation that is coupled to equation 'eq'
100 : : //! \tparam id Tag to access the coupled equation 'eq' (relative) ids, see
101 : : //! tk::grm::couple in Control/Walker/InputDeck/Grammar.h
102 : : //! \param[in] system Relative equation system id of equation 'eq'
103 : : //! \return Relative id of coupled equation of potentially multiple eqs
104 : : //! \note If equation 'eq' is not coupled to equation 'coupledeq', we return a
105 : : //! large number which will hopefully trigger some problems in client code if
106 : : //! used. This is used to indicate "no coupling" so that client code can still
107 : : //! call this function even for an equation that is not coupled, without
108 : : //! chaning client code, compared to equations that are coupled. In other
109 : : //! words, calling this function on a coupledeq equation that is not coupled
110 : : //! is not an error.
111 : : // *****************************************************************************
112 : : {
113 : : static_assert( !std::is_same< eq, coupledeq >::value,
114 : : "Eq and coupled eq must differ" );
115 : :
116 : : const auto& coupled_eq_id = g_inputdeck.template get< tag::param, eq, id >();
117 : :
118 : : if (coupled< eq, coupledeq >( system ))
119 : 72 : return coupled_eq_id[ system ];
120 : : else
121 : : return std::numeric_limits< std::size_t >::max();
122 : : }
123 : :
124 : : template< typename eq, typename coupledeq, typename id >
125 [ + + ]: 132 : std::size_t offset( std::size_t system )
126 : : // *****************************************************************************
127 : : // Query system offset of coupled equation in tk::Data array of all systems
128 : : //! \tparam eq Tag of the equation that is coupled
129 : : //! \tparam coupledeq Tag of the equation that is coupled to equation 'eq'
130 : : //! \tparam id Tag to access the coupled equation 'eq' (relative) ids, see
131 : : //! tk::grm::couple in Control/Walker/InputDeck/Grammar.h
132 : : //! \param[in] system Relative equation system id of equation 'eq'
133 : : //! \return System offset of coupled equation in tk::Data array of all systems
134 : : //! \note If equation 'eq' is not coupled to equation 'coupledeq', we return the
135 : : //! id of the coupled equation. In other words, calling this function on a
136 : : //! coupledeq equation that is not coupled is not an error.
137 : : // *****************************************************************************
138 : : {
139 : : static_assert( !std::is_same< eq, coupledeq >::value,
140 : : "Eq and coupled eq must differ" );
141 : :
142 : : // Query relative id of coupled eq
143 : : auto cid = system_id< eq, coupledeq, id >( system );
144 : :
145 : : // Return offset for coupled eq
146 : : if (coupled< eq, coupledeq >( system ))
147 : 72 : return g_inputdeck.get< tag::component >().offset< coupledeq >( cid );
148 : : else
149 : : return cid;
150 : : }
151 : :
152 : : template< typename eq, typename coupledeq, typename id >
153 [ - - ]: 0 : std::size_t ncomp( std::size_t system )
154 : : // *****************************************************************************
155 : : // Query number of components of coupled equation
156 : : //! \tparam eq Tag of the equation that is coupled
157 : : //! \tparam coupledeq Tag of the equation that is coupled to equation 'eq'
158 : : //! \tparam id Tag to access the coupled equation 'eq' (relative) ids, see
159 : : //! tk::grm::couple in Control/Walker/InputDeck/Grammar.h
160 : : //! \param[in] system Relative equation system id of equation 'eq'
161 : : //! \return Number of scalar components of coupled equation
162 : : //! \note If equation 'eq' is not coupled to equation 'coupledeq', we return the
163 : : //! id of the coupled equation. In other words, calling this function on a
164 : : //! coupledeq equation that is not coupled is not an error.
165 : : // *****************************************************************************
166 : : {
167 : : static_assert( !std::is_same< eq, coupledeq >::value,
168 : : "Eq and coupled eq must differ" );
169 : :
170 : : // Query relative id of coupled eq
171 : : auto cid = system_id< eq, coupledeq, id >( system );
172 : :
173 : : // Return number of scalar components of coupled eq
174 : : if (coupled< eq, coupledeq >( system ))
175 : 0 : return g_inputdeck.get< tag::component >().get< coupledeq >().at( cid );
176 : : else
177 : : return cid;
178 : : }
179 : :
180 : : } // walker::
181 : :
182 : : #endif // CoupledEq_h
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