33#ifndef GKO_PUBLIC_CORE_MULTIGRID_FIXED_COARSENING_HPP_
34#define GKO_PUBLIC_CORE_MULTIGRID_FIXED_COARSENING_HPP_
40#include <ginkgo/core/base/composition.hpp>
41#include <ginkgo/core/base/exception_helpers.hpp>
42#include <ginkgo/core/base/lin_op.hpp>
43#include <ginkgo/core/base/types.hpp>
44#include <ginkgo/core/matrix/csr.hpp>
45#include <ginkgo/core/matrix/dense.hpp>
46#include <ginkgo/core/multigrid/multigrid_level.hpp>
69template <
typename ValueType = default_precision,
typename IndexType =
int32>
71 :
public EnableLinOp<FixedCoarsening<ValueType, IndexType>>,
77 using value_type = ValueType;
78 using index_type = IndexType;
87 return system_matrix_;
115 void apply_impl(
const LinOp* b,
LinOp* x)
const override
121 LinOp* x)
const override
130 explicit FixedCoarsening(
const Factory* factory,
131 std::shared_ptr<const LinOp> system_matrix)
133 system_matrix->get_size()),
134 EnableMultigridLevel<ValueType>(system_matrix),
135 parameters_{factory->get_parameters()},
136 system_matrix_{system_matrix}
138 if (system_matrix_->get_size()[0] != 0) {
147 std::shared_ptr<const LinOp> system_matrix_{};
The EnableLinOp mixin can be used to provide sensible default implementations of the majority of the ...
Definition lin_op.hpp:908
This mixin inherits from (a subclass of) PolymorphicObject and provides a base implementation of a ne...
Definition polymorphic_object.hpp:691
Definition lin_op.hpp:146
std::shared_ptr< const Executor > get_executor() const noexcept
Returns the Executor of the object.
Definition polymorphic_object.hpp:263
std::shared_ptr< Composition< ValueType > > get_composition() const
Returns the composition operators.
Definition composition.hpp:214
An array is a container which encapsulates fixed-sized arrays, stored on the Executor tied to the arr...
Definition array.hpp:187
The EnableMultigridLevel gives the default implementation of MultigridLevel with composition and prov...
Definition multigrid_level.hpp:111
Definition fixed_coarsening.hpp:111
FixedCoarsening is a very simple coarse grid generation algorithm.
Definition fixed_coarsening.hpp:72
std::shared_ptr< const LinOp > get_system_matrix() const
Returns the system operator (matrix) of the linear system.
Definition fixed_coarsening.hpp:85
#define GKO_CREATE_FACTORY_PARAMETERS(_parameters_name, _factory_name)
This Macro will generate a new type containing the parameters for the factory _factory_name.
Definition abstract_factory.hpp:308
#define GKO_FACTORY_PARAMETER_SCALAR(_name, _default)
Creates a scalar factory parameter in the factory parameters structure.
Definition abstract_factory.hpp:473
#define GKO_ENABLE_BUILD_METHOD(_factory_name)
Defines a build method for the factory, simplifying its construction by removing the repetitive typin...
Definition abstract_factory.hpp:422
#define GKO_ENABLE_LIN_OP_FACTORY(_lin_op, _parameters_name, _factory_name)
This macro will generate a default implementation of a LinOpFactory for the LinOp subclass it is defi...
Definition lin_op.hpp:1046
#define GKO_FACTORY_PARAMETER_VECTOR(_name,...)
Creates a vector factory parameter in the factory parameters structure.
Definition abstract_factory.hpp:489
The Ginkgo namespace.
Definition abstract_factory.hpp:48
constexpr T one()
Returns the multiplicative identity for T.
Definition math.hpp:803