sillierCgSolve.hpp

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// 
//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
//                 Copyright (2004) Sandia Corporation
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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#ifndef THYRA_SILLIER_CG_SOLVE_HPP
#define THYRA_SILLIER_CG_SOLVE_HPP

#include "Thyra_LinearOperatorImpl.hpp"
#include "Thyra_VectorSpaceImpl.hpp"
#include "Thyra_VectorImpl.hpp"
#include "Thyra_AssertOp.hpp"
#include "silliestCgSolve.hpp"


template<class Scalar>
bool sillierCgSolve(
  const Thyra::LinearOpBase<Scalar> &A_in,
  const Thyra::VectorBase<Scalar> &b_in,
  const int maxNumIters,
  const typename Teuchos::ScalarTraits<Scalar>::magnitudeType tolerance,
  const Teuchos::Ptr<Thyra::VectorBase<Scalar> > &x_inout,
  std::ostream &out
  )
{

  // Validate the input
  THYRA_ASSERT_LINEAR_OP_VEC_APPLY_SPACES("sillyCgSolve()", A_in,
    Thyra::NOTRANS, *x_inout, &b_in);

  // Create handle wrappers to facilitate the use of operator overloading
  const Thyra::ConstLinearOperator<Scalar> A(Teuchos::rcpFromRef(A_in));
  const Thyra::ConstVector<Scalar> b(Teuchos::rcpFromRef(b_in));
  Thyra::Vector<Scalar> x(Teuchos::rcpFromPtr(x_inout));

  // Describe the arguments
  Teuchos::EVerbosityLevel vl = Teuchos::VERB_MEDIUM;
  out << "\nStarting CG solver ...\n" << std::scientific << "\ndescribe A:\n"<<describe(A,vl)
      << "\ndescribe b:\n"<<describe(b,vl)<<"\ndescribe x:\n"<<describe(x,vl)<<"\n";
  
  return silliestCgSolve(A, b, maxNumIters, tolerance, x, out);

} // end sillierCgSolve


#endif // THYRA_SILLIER_CG_SOLVE_HPP

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