non_linear_solver_petsc.hh
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	/* -------------------------------------------------------------------------- */
	#include "non_linear_solver.hh"
	#include "petscsnes.h"
	/* -------------------------------------------------------------------------- */

	#ifndef __AKANTU_NON_LINEAR_SOLVER_PETSC_HH__
	#define __AKANTU_NON_LINEAR_SOLVER_PETSC_HH__

	namespace akantu {

	class NonLinearSolverPETSc : NonLinearSolver {
	/* ------------------------------------------------------------------------ */
	/* Constructors/Destructors */
	/* ------------------------------------------------------------------------ */
	public:
	NonLinearSolverPETSc(DOFManagerPETSc & dof_manager,
	const NonLinearSolverType & non_linear_solver_type,
	const ID & id = "non_linear_solver_petsc",
	UInt memory_id = 0);

	~NonLinearSolverPETSc() override;

	/* ------------------------------------------------------------------------ */
	/* Methods */
	/* ------------------------------------------------------------------------ */
	public:
	/// solve the system described by the jacobian matrix, and rhs contained in
	/// the dof manager
	void solve(SolverCallback & callback) override;

	/* ------------------------------------------------------------------------ */
	/* Class Members */
	/* ------------------------------------------------------------------------ */
	protected:
	DOFManagerPETSc & dof_manager;

	SNES snes;
	};

	} // akantu

	#endif /* __AKANTU_NON_LINEAR_SOLVER_PETSC_HH__ */