gmresFabric.hh

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#ifndef GMResfabric_hh
#define GMResfabric_hh
 
#if __GNUC__ == 2
#  include <float.h>
#  define EPS DBL_EPSILON
#else
#  include <limits>
#  define EPS std::numeric_limits<double>::epsilon()
#endif
#include "operator/gmres.hh"
#include "operator/solverFabric.hh"
 
namespace concepts {
 
  // *********************************************************** GMResFabric **
 
  template<typename F>
  class GMResFabric : public SolverFabric<F> {
  public:
    GMResFabric(Real maxeps = EPS,
                int maxit = 0, uint rs = 0, uint relres = 0)
      : maxeps_(maxeps), maxit_(maxit), rs_(rs), relres_(relres) {}
    virtual Operator<F>* operator()(Operator<F>& matrix) {
      return new GMRes<F>(matrix, maxeps_, maxit_, rs_, relres_);
    }
  protected:
    virtual std::ostream& info(std::ostream& os) const {
      return os << "GMResFabric(maxeps = " << maxeps_ << ", maxit = "
                << maxit_ << ", rs = " << rs_ << ", relres = " 
                << relres_ << ")";
    }
  private:
    Real maxeps_;
    int maxit_;
    uint rs_;
    uint relres_;
  };
 
} // concepts
 
#endif // GMResfabric_hh