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coupled_ode_system.hpp
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1 #ifndef STAN_MATH_PRIM_ARR_FUNCTOR_COUPLED_ODE_SYSTEM_HPP
2 #define STAN_MATH_PRIM_ARR_FUNCTOR_COUPLED_ODE_SYSTEM_HPP
3
4 #include <stan/math/prim/scal/err/check_size_match.hpp>
5 #include <ostream>
6 #include <vector>
7
8 namespace stan {
9 namespace math {
10
24 template <typename F, typename T1, typename T2>
25 struct coupled_ode_system {
26 };
27
38 template <typename F>
39 class coupled_ode_system<F, double, double> {
40 public:
41 const F& f_;
42 const std::vector<double>& y0_dbl_;
43 const std::vector<double>& theta_dbl_;
44 const std::vector<double>& x_;
45 const std::vector<int>& x_int_;
46 const size_t N_;
47 const size_t M_;
48 const size_t size_;
49 std::ostream* msgs_;
50
63 coupled_ode_system(const F& f,
64 const std::vector<double>& y0,
65 const std::vector<double>& theta,
66 const std::vector<double>& x,
67 const std::vector<int>& x_int,
68 std::ostream* msgs)
69 : f_(f),
70 y0_dbl_(y0),
71 theta_dbl_(theta),
72 x_(x),
73 x_int_(x_int),
74 N_(y0.size()),
75 M_(theta.size()),
76 size_(N_),
77 msgs_(msgs) {
78 }
79
95 void operator()(const std::vector<double>& y,
96 std::vector<double>& dy_dt,
97 double t) {
98 dy_dt = f_(t, y, theta_dbl_, x_, x_int_, msgs_);
99 stan::math::check_size_match("coupled_ode_system",
100 "y", y.size(),
101 "dy_dt", dy_dt.size());
102 }
103
109 int size() const {
110 return size_;
111 }
112
125 std::vector<double> initial_state() {
126 std::vector<double> state(size_, 0.0);
127 for (size_t n = 0; n < N_; n++)
128 state[n] = y0_dbl_[n];
129 return state;
130 }
131
142 std::vector<std::vector<double> >
143 decouple_states(const std::vector<std::vector<double> >& y) {
144 return y;
145 }
146 };
147 } // math
148 } // stan
149
150 #endif
stan::math::coupled_ode_system< F, double, double >::x_int_
const std::vector< int > & x_int_
Definition: coupled_ode_system.hpp:45
stan::math::coupled_ode_system< F, double, double >::operator()
void operator()(const std::vector< double > &y, std::vector< double > &dy_dt, double t)
Calculates the derivative of the coupled ode system with respect to the specified state at the specif...
Definition: coupled_ode_system.hpp:95
stan::math::coupled_ode_system< F, double, double >::theta_dbl_
const std::vector< double > & theta_dbl_
Definition: coupled_ode_system.hpp:43
stan::math::coupled_ode_system< F, double, double >::coupled_ode_system
coupled_ode_system(const F &f, const std::vector< double > &y0, const std::vector< double > &theta, const std::vector< double > &x, const std::vector< int > &x_int, std::ostream *msgs)
Construct the coupled ODE system from the base system function, initial state, parameters, data and a stream for messages.
Definition: coupled_ode_system.hpp:63
stan::math::coupled_ode_system< F, double, double >::msgs_
std::ostream * msgs_
Definition: coupled_ode_system.hpp:49
check_size_match.hpp
stan
Definition: log_sum_exp.hpp:8
stan::math::coupled_ode_system< F, double, double >::M_
const size_t M_
Definition: coupled_ode_system.hpp:47
stan::math::coupled_ode_system< F, double, double >::y0_dbl_
const std::vector< double > & y0_dbl_
Definition: coupled_ode_system.hpp:42
stan::math::coupled_ode_system< F, double, double >::N_
const size_t N_
Definition: coupled_ode_system.hpp:46
size_
size_t size_
Definition: dot_self.hpp:18
stan::math::coupled_ode_system< F, double, double >::initial_state
std::vector< double > initial_state()
Returns the initial state of the coupled system, which is identical to the base ODE original state in...
Definition: coupled_ode_system.hpp:125
stan::math::coupled_ode_system< F, double, double >::f_
const F & f_
Definition: coupled_ode_system.hpp:41
stan::math::check_size_match
bool check_size_match(const char *function, const char *name_i, T_size1 i, const char *name_j, T_size2 j)
Return true if the provided sizes match.
Definition: check_size_match.hpp:30
stan::math::coupled_ode_system< F, double, double >::x_
const std::vector< double > & x_
Definition: coupled_ode_system.hpp:44
stan::math::coupled_ode_system< F, double, double >::decouple_states
std::vector< std::vector< double > > decouple_states(const std::vector< std::vector< double > > &y)
Returns the base portion of the coupled state.
Definition: coupled_ode_system.hpp:143
stan::math::size
int size(const std::vector< T > &x)
Return the size of the specified standard vector.
Definition: size.hpp:17
stan::math::coupled_ode_system
Base template class for a coupled ordinary differential equation system, which adds sensitivities to ...
Definition: coupled_ode_system.hpp:25
N_
int N_
Definition: mdivide_left.hpp:20
stan::math::coupled_ode_system< F, double, double >::size
int size() const
Returns the size of the coupled system.
Definition: coupled_ode_system.hpp:109
stan::math::coupled_ode_system< F, double, double >::size_
const size_t size_
Definition: coupled_ode_system.hpp:48

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