preconditioner.hpp

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#pragma once
#include <graphite/factor.hpp>
#include <graphite/vertex.hpp>
 
namespace graphite {
 
template <typename T, typename S> class Preconditioner {
public:
  virtual void update_structure(Graph<T, S> *graph, StreamPool &streams) = 0;
 
  virtual void update_values(Graph<T, S> *graph, StreamPool &streams) = 0;
 
  virtual void set_damping_factor(Graph<T, S> *graph, T damping_factor,
                                  const bool use_identity,
                                  StreamPool &streams) = 0;
 
  virtual void apply(Graph<T, S> *graph, T *z, const T *r,
                     StreamPool &streams) = 0;
};
 
} // namespace graphite