NewtonWithLineSearch.h

// Copyright 2024, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
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#pragma once
 
#include "neml2/solvers/Newton.h"
#include "neml2/tensors/Scalar.h"
 
namespace neml2
{
class NewtonWithLineSearch : public Newton
{
public:
  static OptionSet expected_options();
 
  NewtonWithLineSearch(const OptionSet & options);
 
protected:
  void update(NonlinearSystem & system,
              NonlinearSystem::Sol<true> & x,
              const NonlinearSystem::Res<true> & r,
              const NonlinearSystem::Jac<true> & J) override;
 
  virtual Scalar linesearch(NonlinearSystem & system,
                            const NonlinearSystem::Sol<true> & x,
                            const NonlinearSystem::Sol<true> & dx,
                            const NonlinearSystem::Res<true> & R0) const;
 
  unsigned int _linesearch_miter;
 
  Real _linesearch_sigma;
 
  Real _linesearch_c;
};
} // namespace neml2