AnasaziTraceMinTypes.hpp

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//
//                 Anasazi: Block Eigensolvers Package
//                 Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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// This library is distributed in the hope that it will be useful, but
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#ifndef ANASAZI_TRACEMIN_TYPES_HPP
#define ANASAZI_TRACEMIN_TYPES_HPP

namespace Anasazi {
namespace Experimental {

  enum WhenToShiftType
  {
    NEVER_SHIFT,
    SHIFT_WHEN_TRACE_LEVELS,
    SHIFT_WHEN_RESID_SMALL,
    ALWAYS_SHIFT
  };

  enum HowToShiftType
  {
    LARGEST_CONVERGED_SHIFT,
    ADJUSTED_RITZ_SHIFT,
    RITZ_VALUES_SHIFT
  };

  enum SaddleSolType
  {
    PROJECTED_KRYLOV_SOLVER,
    SCHUR_COMPLEMENT_SOLVER,
    BD_PREC_MINRES
  };

}}
#endif