/usr/include/trilinos/ROL_Krylov.hpp is in libtrilinos-rol-dev 12.12.1-5.
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// Rapid Optimization Library (ROL) Package
// Copyright (2014) Sandia Corporation
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// @HEADER
#ifndef ROL_KRYLOV_H
#define ROL_KRYLOV_H
/** \class ROL::Krylov
\brief Provides definitions for Krylov solvers.
*/
#include "ROL_Vector.hpp"
#include "ROL_LinearOperator.hpp"
namespace ROL {
template<class Real>
class Krylov {
Real absTol_; // Absolute residual tolerance
Real relTol_; // Relative residual tolerance
unsigned maxit_; // Maximum number of iterations
public:
virtual ~Krylov(void) {}
Krylov( Real absTol = 1.e-4, Real relTol = 1.e-2, unsigned maxit = 100 )
: absTol_(absTol), relTol_(relTol), maxit_(maxit) {}
Krylov( Teuchos::ParameterList &parlist ) {
Teuchos::ParameterList &krylovList = parlist.sublist("General").sublist("Krylov");
absTol_ = krylovList.get("Absolute Tolerance", 1.e-4);
relTol_ = krylovList.get("Relative Tolerance", 1.e-2);
maxit_ = krylovList.get("Iteration Limit", 100);
}
// Run Krylov Method
virtual void run( Vector<Real> &x, LinearOperator<Real> &A, const Vector<Real> &b, LinearOperator<Real> &M,
int &iter, int &flag ) = 0;
void resetAbsoluteTolerance(const Real absTol) const {
absTol_ = absTol;
}
void resetRelativeTolerance(const Real relTol) const {
relTol_ = relTol;
}
void resetMaximumIteration(const unsigned maxit) {
maxit_ = maxit;
}
Real getAbsoluteTolerance(void) const {
return absTol_;
}
Real getRelativeTolerance(void) const {
return relTol_;
}
unsigned getMaximumIteration(void) const {
return maxit_;
}
};
}
#include "ROL_KrylovFactory.hpp"
#endif
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