MFEM v4.7.0
Finite element discretization library

#include <ode.hpp>
Public Member Functions  
RK2Solver (const real_t a_=2./3.)  
void  Init (TimeDependentOperator &f_) override 
Associate a TimeDependentOperator with the ODE solver.  
void  Step (Vector &x, real_t &t, real_t &dt) override 
Perform a time step from time t [in] to time t [out] based on the requested step size dt [in].  
Public Member Functions inherited from mfem::ODESolver  
ODESolver ()  
virtual void  Run (Vector &x, real_t &t, real_t &dt, real_t tf) 
Perform time integration from time t [in] to time tf [in].  
virtual int  GetMaxStateSize () 
Function for getting and setting the state vectors.  
virtual int  GetStateSize () 
virtual const Vector &  GetStateVector (int i) 
virtual void  GetStateVector (int i, Vector &state) 
virtual void  SetStateVector (int i, Vector &state) 
virtual  ~ODESolver () 
Additional Inherited Members  
Protected Attributes inherited from mfem::ODESolver  
TimeDependentOperator *  f 
Pointer to the associated TimeDependentOperator.  
MemoryType  mem_type 
A family of explicit secondorder RK2 methods. Some choices for the parameter 'a' are: a = 1/2  the midpoint method a = 1  Heun's method a = 2/3  default, has minimal truncation error.

inline 

overridevirtual 
Associate a TimeDependentOperator with the ODE solver.
This method has to be called:
Reimplemented from mfem::ODESolver.
Perform a time step from time t [in] to time t [out] based on the requested step size dt [in].
[in,out]  x  Approximate solution. 
[in,out]  t  Time associated with the approximate solution x. 
[in,out]  dt  Time step size. 
The following rules describe the common behavior of the method:
Implements mfem::ODESolver.