/usr/include/trilinos/MueLu_PreDropFunctionConstVal_decl.hpp is in libtrilinos-muelu-dev 12.4.2-2.
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//
// ***********************************************************************
//
// MueLu: A package for multigrid based preconditioning
// Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// @HEADER
#ifndef MUELU_PREDROPFUNCTIONCONSTVAL_DECL_HPP
#define MUELU_PREDROPFUNCTIONCONSTVAL_DECL_HPP
#include "MueLu_ConfigDefs.hpp"
#include "MueLu_PreDropFunctionBaseClass.hpp"
#include "MueLu_PreDropFunctionConstVal_fwd.hpp"
#include "MueLu_Graph_fwd.hpp"
namespace MueLu {
/*!
* Example implementation for dropping values smaller then a constant threshold
*
*/
template <class Scalar = double, class LocalOrdinal = int, class GlobalOrdinal = LocalOrdinal, class Node = KokkosClassic::DefaultNode::DefaultNodeType>
class PreDropFunctionConstVal :
public MueLu::PreDropFunctionBaseClass<Scalar, LocalOrdinal, GlobalOrdinal, Node> {
#undef MUELU_PREDROPFUNCTIONCONSTVAL_SHORT
#include "MueLu_UseShortNames.hpp"
public:
//! Constructor
explicit PreDropFunctionConstVal(const Scalar threshold = 0.0);
//! Destructor
virtual ~PreDropFunctionConstVal() { }
/*! Drop
* @param lrow (size_t): local row index (=lrowid)
* @param grow (GlobalOrdinal: global row id
* @param k (size_t): local column iterator
* @param lcid (LocalOrdinal): local column id (=indices[k])
* @param gcid (GlobalOrdinal): global column id
* @param indices (ArrrayView): array of local column ids in current row (lrow)
* @param vals (ArrayView): array of corresponding values in current row (lrow)
* @return bool: false, if value in (lrow, lcid) shall be kept, true if it should be dropped
*/
bool Drop(size_t lrow, GlobalOrdinal grow, size_t k, LocalOrdinal lcid, GlobalOrdinal gcid, const Teuchos::ArrayView<const LocalOrdinal> & indices, const Teuchos::ArrayView<const Scalar> & vals);
//! Return threshold value.
Scalar GetThreshold() const;
//! @name Overridden from Teuchos::Describable
//@{
//! Return a simple one-line description of this object.
std::string description() const;
//! Print the object with some verbosity level to an FancyOStream object.
//using MueLu::Describable::describe; // overloading, not hiding
//void describe(Teuchos::FancyOStream &out, const VerbLevel verbLevel = Default) const;
//@}
private:
Scalar threshold_;
};
}
#define MUELU_PREDROPFUNCTIONCONSTVAL_SHORT
#endif // MUELU_PREDROPFUNCTIONCONSTVAL_DECL_HPP
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