periodic__extrapolation__rule_8hpp_source.html

// Copyright (C) The DDC development team, see COPYRIGHT.md file

//

// SPDX-License-Identifier: MIT


#pragma once


#include <Kokkos_Assert.hpp>

#include <Kokkos_Macros.hpp>


namespace ddc {


template <class DimI>

struct PeriodicExtrapolationRule

{

    static_assert(DimI::PERIODIC, "PeriodicExtrapolationRule requires periodic dimension");


    template <class CoordType, class ChunkSpan>

    KOKKOS_FUNCTION double operator()(CoordType, ChunkSpan) const

    {

        KOKKOS_ASSERT("PeriodicExtrapolationRule::operator() should never be called")


        return 0.;

    }

};


} // namespace ddc

ddc::ChunkCommon::ChunkSpan
friend class ChunkSpan
Definition chunk_common.hpp:76

ddc::DiscreteDomain::DiscreteDomain
friend class DiscreteDomain
Definition discrete_domain.hpp:66

ddc::DiscreteVector::operator!=
KOKKOS_FUNCTION constexpr bool operator!=(DiscreteVector< OTags... > const &rhs) const noexcept
Definition discrete_vector.hpp:346

ddc::GrevilleInterpolationPoints
A class which provides helper functions to initialise the Greville points from a B-Spline definition.
Definition greville_interpolation_points.hpp:30

ddc::GrevilleInterpolationPoints::get_domain
static ddc::DiscreteDomain< Sampling > get_domain()
Get the domain which gives us access to all of the Greville points.
Definition greville_interpolation_points.hpp:281

ddc::GrevilleInterpolationPoints::get_sampling
static auto get_sampling()
Get the UniformPointSampling defining the Greville points.
Definition greville_interpolation_points.hpp:146

ddc::KnotsAsInterpolationPoints
Helper class for the initialisation of the mesh of interpolation points.
Definition knots_as_interpolation_points.hpp:38

ddc::KnotsAsInterpolationPoints::get_sampling
static auto get_sampling()
Get the sampling of interpolation points.
Definition knots_as_interpolation_points.hpp:51

ddc::KnotsAsInterpolationPoints::get_domain
static ddc::DiscreteDomain< Sampling > get_domain()
Get the domain which can be used to access the interpolation points in the sampling.
Definition knots_as_interpolation_points.hpp:85

ddc::NonUniformBSplines::Impl
Storage class of the static attributes of the discrete dimension.
Definition bsplines_non_uniform.hpp:90

ddc::NonUniformBSplines::Impl::operator=
Impl & operator=(Impl &&x)=default
Move-assigns.

ddc::NonUniformBSplines::Impl::Impl
Impl(RandomIt breaks_begin, RandomIt breaks_end)
Constructs an Impl by iterating over a range of break points from begin to end.
Definition bsplines_non_uniform.hpp:410

ddc::NonUniformBSplines::Impl::rmin
KOKKOS_INLINE_FUNCTION ddc::Coordinate< CDim > rmin() const noexcept
Returns the coordinate of the first break point of the domain on which the B-splines are defined.
Definition bsplines_non_uniform.hpp:288

ddc::NonUniformBSplines::Impl::Impl
Impl(std::vector< ddc::Coordinate< CDim > > const &breaks)
Constructs an Impl using a std::vector.
Definition bsplines_non_uniform.hpp:138

ddc::NonUniformBSplines::Impl::eval_basis
KOKKOS_INLINE_FUNCTION discrete_element_type eval_basis(DSpan1D values, ddc::Coordinate< CDim > const &x) const
Evaluates non-zero B-splines at a given coordinate.
Definition bsplines_non_uniform.hpp:455

ddc::NonUniformBSplines::Impl::size
KOKKOS_INLINE_FUNCTION std::size_t size() const noexcept
Returns the number of elements necessary to construct a spline representation of a function.
Definition bsplines_non_uniform.hpp:319

ddc::NonUniformBSplines::Impl::Impl
Impl(Impl< DDim, OriginMemorySpace > const &impl)
Copy-constructs from another Impl with a different Kokkos memory space.
Definition bsplines_non_uniform.hpp:169

ddc::NonUniformBSplines::Impl::~Impl
~Impl()=default
Destructs.

ddc::NonUniformBSplines::Impl::break_point_domain
KOKKOS_INLINE_FUNCTION ddc::DiscreteDomain< knot_discrete_dimension_type > break_point_domain() const
Returns the discrete domain which describes the break points.
Definition bsplines_non_uniform.hpp:338

ddc::NonUniformBSplines::Impl::get_last_support_knot
KOKKOS_INLINE_FUNCTION ddc::DiscreteElement< knot_discrete_dimension_type > get_last_support_knot(discrete_element_type const &ix) const
Returns the coordinate of the last support knot associated to a DiscreteElement identifying a B-splin...
Definition bsplines_non_uniform.hpp:278

ddc::NonUniformBSplines::Impl::Impl
Impl(Impl &&x)=default
Move-constructs.

ddc::NonUniformBSplines::Impl::Impl
Impl(std::initializer_list< ddc::Coordinate< CDim > > breaks)
Constructs an Impl using a brace-list, i.e.
Definition bsplines_non_uniform.hpp:126

ddc::NonUniformBSplines::Impl::eval_basis_and_n_derivs
KOKKOS_INLINE_FUNCTION discrete_element_type eval_basis_and_n_derivs(ddc::DSpan2D derivs, ddc::Coordinate< CDim > const &x, std::size_t n) const
Evaluates non-zero B-spline values and  derivatives at a given coordinate.
Definition bsplines_non_uniform.hpp:555

ddc::NonUniformBSplines::Impl::ncells
KOKKOS_INLINE_FUNCTION std::size_t ncells() const noexcept
Returns the number of cells over which the B-splines are defined.
Definition bsplines_non_uniform.hpp:372

ddc::NonUniformBSplines::Impl::full_domain
KOKKOS_INLINE_FUNCTION discrete_domain_type full_domain() const
Returns the discrete domain including eventual additional B-splines in the periodic case.
Definition bsplines_non_uniform.hpp:328

ddc::NonUniformBSplines::Impl::get_first_support_knot
KOKKOS_INLINE_FUNCTION ddc::DiscreteElement< knot_discrete_dimension_type > get_first_support_knot(discrete_element_type const &ix) const
Returns the coordinate of the first support knot associated to a DiscreteElement identifying a B-spli...
Definition bsplines_non_uniform.hpp:263

ddc::NonUniformBSplines::Impl::Impl
Impl()=default

ddc::NonUniformBSplines::Impl::npoints
KOKKOS_INLINE_FUNCTION std::size_t npoints() const noexcept
The number of break points.
Definition bsplines_non_uniform.hpp:349

ddc::NonUniformBSplines::Impl::nbasis
KOKKOS_INLINE_FUNCTION std::size_t nbasis() const noexcept
Returns the number of basis functions.
Definition bsplines_non_uniform.hpp:360

ddc::NonUniformBSplines::Impl::Impl
Impl(Impl const &x)=default
Copy-constructs.

ddc::NonUniformBSplines::Impl::eval_deriv
KOKKOS_INLINE_FUNCTION discrete_element_type eval_deriv(DSpan1D derivs, ddc::Coordinate< CDim > const &x) const
Evaluates non-zero B-spline derivatives at a given coordinate.
Definition bsplines_non_uniform.hpp:495

ddc::NonUniformBSplines::Impl::length
KOKKOS_INLINE_FUNCTION double length() const noexcept
Returns the length of the domain.
Definition bsplines_non_uniform.hpp:306

ddc::NonUniformBSplines::Impl::operator=
Impl & operator=(Impl const &x)=default
Copy-assigns.

ddc::NonUniformBSplines::Impl::rmax
KOKKOS_INLINE_FUNCTION ddc::Coordinate< CDim > rmax() const noexcept
Returns the coordinate of the last break point of the domain on which the B-splines are defined.
Definition bsplines_non_uniform.hpp:297

ddc::NonUniformBSplines
The type of a non-uniform 1D spline basis (B-spline).
Definition bsplines_non_uniform.hpp:46

ddc::NonUniformBSplines::degree
static constexpr std::size_t degree() noexcept
The degree of B-splines.
Definition bsplines_non_uniform.hpp:60

ddc::NonUniformBSplines::is_periodic
static constexpr bool is_periodic() noexcept
Indicates if the B-splines are periodic or not.
Definition bsplines_non_uniform.hpp:69

ddc::NonUniformBSplines::is_uniform
static constexpr bool is_uniform() noexcept
Indicates if the B-splines are uniform or not (this is not the case here).
Definition bsplines_non_uniform.hpp:78

ddc::NonUniformPointSampling
NonUniformPointSampling models a non-uniform discretization of the CDim segment .
Definition non_uniform_point_sampling.hpp:40

ddc::UniformBSplines::Impl
Storage class of the static attributes of the discrete dimension.
Definition bsplines_uniform.hpp:94

ddc::UniformBSplines::Impl::get_last_support_knot
KOKKOS_INLINE_FUNCTION ddc::DiscreteElement< knot_discrete_dimension_type > get_last_support_knot(discrete_element_type const &ix) const
Returns the coordinate of the last support knot associated to a DiscreteElement identifying a B-splin...
Definition bsplines_uniform.hpp:268

ddc::UniformBSplines::Impl::Impl
Impl(ddc::Coordinate< CDim > rmin, ddc::Coordinate< CDim > rmax, std::size_t ncells)
Constructs a spline basis (B-splines) with n equidistant knots over .
Definition bsplines_uniform.hpp:135

ddc::UniformBSplines::Impl::rmax
KOKKOS_INLINE_FUNCTION ddc::Coordinate< CDim > rmax() const noexcept
Returns the coordinate of the upper bound of the domain on which the B-splines are defined.
Definition bsplines_uniform.hpp:287

ddc::UniformBSplines::Impl::eval_basis
KOKKOS_INLINE_FUNCTION discrete_element_type eval_basis(DSpan1D values, ddc::Coordinate< CDim > const &x) const
Evaluates non-zero B-splines at a given coordinate.
Definition bsplines_uniform.hpp:204

ddc::UniformBSplines::Impl::break_point_domain
KOKKOS_INLINE_FUNCTION ddc::DiscreteDomain< knot_discrete_dimension_type > break_point_domain() const
Returns the discrete domain which describes the break points.
Definition bsplines_uniform.hpp:328

ddc::UniformBSplines::Impl::rmin
KOKKOS_INLINE_FUNCTION ddc::Coordinate< CDim > rmin() const noexcept
Returns the coordinate of the lower bound of the domain on which the B-splines are defined.
Definition bsplines_uniform.hpp:278

ddc::UniformBSplines::Impl::~Impl
~Impl()=default
Destructs.

ddc::UniformBSplines::Impl::nbasis
KOKKOS_INLINE_FUNCTION std::size_t nbasis() const noexcept
Returns the number of basis functions.
Definition bsplines_uniform.hpp:339

ddc::UniformBSplines::Impl::Impl
Impl()=default

ddc::UniformBSplines::Impl::Impl
Impl(Impl const &x)=default
Copy-constructs.

ddc::UniformBSplines::Impl::size
KOKKOS_INLINE_FUNCTION std::size_t size() const noexcept
Returns the number of elements necessary to construct a spline representation of a function.
Definition bsplines_uniform.hpp:309

ddc::UniformBSplines::Impl::Impl
Impl(Impl &&x)=default
Move-constructs.

ddc::UniformBSplines::Impl::eval_basis_and_n_derivs
KOKKOS_INLINE_FUNCTION discrete_element_type eval_basis_and_n_derivs(ddc::DSpan2D derivs, ddc::Coordinate< CDim > const &x, std::size_t n) const
Evaluates non-zero B-spline values and  derivatives at a given coordinate.
Definition bsplines_uniform.hpp:469

ddc::UniformBSplines::Impl::get_first_support_knot
KOKKOS_INLINE_FUNCTION ddc::DiscreteElement< knot_discrete_dimension_type > get_first_support_knot(discrete_element_type const &ix) const
Returns the coordinate of the first support knot associated to a DiscreteElement identifying a B-spli...
Definition bsplines_uniform.hpp:253

ddc::UniformBSplines::Impl::length
KOKKOS_INLINE_FUNCTION double length() const noexcept
Returns the length of the domain.
Definition bsplines_uniform.hpp:296

ddc::UniformBSplines::Impl::Impl
Impl(Impl< DDim, OriginMemorySpace > const &impl)
Copy-constructs from another Impl with a different Kokkos memory space.
Definition bsplines_uniform.hpp:155

ddc::UniformBSplines::Impl::ncells
KOKKOS_INLINE_FUNCTION std::size_t ncells() const noexcept
Returns the number of cells over which the B-splines are defined.
Definition bsplines_uniform.hpp:351

ddc::UniformBSplines::Impl::eval_deriv
KOKKOS_INLINE_FUNCTION discrete_element_type eval_deriv(DSpan1D derivs, ddc::Coordinate< CDim > const &x) const
Evaluates non-zero B-spline derivatives at a given coordinate.
Definition bsplines_uniform.hpp:424

ddc::UniformBSplines::Impl::operator=
Impl & operator=(Impl &&x)=default
Move-assigns.

ddc::UniformBSplines::Impl::full_domain
KOKKOS_INLINE_FUNCTION discrete_domain_type full_domain() const
Returns the discrete domain including eventual additional B-splines in the periodic case.
Definition bsplines_uniform.hpp:318

ddc::UniformBSplines::Impl::operator=
Impl & operator=(Impl const &x)=default
Copy-assigns.

ddc::UniformBSplines
The type of a uniform 1D spline basis (B-spline).
Definition bsplines_uniform.hpp:50

ddc::UniformBSplines::is_uniform
static constexpr bool is_uniform() noexcept
Indicates if the B-splines are uniform or not (this is the case here).
Definition bsplines_uniform.hpp:82

ddc::UniformBSplines::is_periodic
static constexpr bool is_periodic() noexcept
Indicates if the B-splines are periodic or not.
Definition bsplines_uniform.hpp:73

ddc::UniformBSplines::degree
static constexpr std::size_t degree() noexcept
The degree of B-splines.
Definition bsplines_uniform.hpp:64

ddc::UniformPointSampling
UniformPointSampling models a uniform discretization of the provided continuous dimension.
Definition uniform_point_sampling.hpp:36

ddc
The top-level namespace of DDC.
Definition aligned_allocator.hpp:11

ddc::n_boundary_equations
constexpr int n_boundary_equations(ddc::BoundCond const bc, std::size_t const degree)
Return the number of equations needed to describe a given boundary condition.
Definition spline_boundary_conditions.hpp:55

ddc::is_uniform_bsplines_v
constexpr bool is_uniform_bsplines_v
Indicates if a tag corresponds to uniform B-splines or not.
Definition bsplines_uniform.hpp:383

ddc::BoundCond
BoundCond
An enum representing a spline boundary condition.
Definition spline_boundary_conditions.hpp:16

ddc::BoundCond::GREVILLE
@ GREVILLE
Use Greville points instead of conditions on derivative for B-Spline interpolation.

ddc::BoundCond::HERMITE
@ HERMITE
Hermite boundary condition.

ddc::BoundCond::PERIODIC
@ PERIODIC
Periodic boundary condition u(1)=u(n)

ddc::integrals
ddc::ChunkSpan< double, ddc::DiscreteDomain< DDim >, Layout, MemorySpace > integrals(ExecSpace const &execution_space, ddc::ChunkSpan< double, ddc::DiscreteDomain< DDim >, Layout, MemorySpace > int_vals)
Compute the integrals of the B-splines.
Definition integrals.hpp:166

ddc::is_non_uniform_bsplines_v
constexpr bool is_non_uniform_bsplines_v
Indicates if a tag corresponds to non-uniform B-splines or not.
Definition bsplines_non_uniform.hpp:405

ddc::ConstantExtrapolationRule
Definition constant_extrapolation_rule.hpp:19

ddc::Deriv
A templated struct representing a discrete dimension storing the derivatives of a function along a co...
Definition deriv.hpp:15

ddc::KnotDiscreteDimension
If the type DDim is a B-spline, defines type to the discrete dimension of the associated knots.
Definition knot_discrete_dimension_type.hpp:17

ddc::ConstantExtrapolationRule< DimI, DimNI >::ConstantExtrapolationRule
ConstantExtrapolationRule(ddc::Coordinate< DimI > eval_pos, ddc::Coordinate< DimNI > eval_pos_not_interest_min, ddc::Coordinate< DimNI > eval_pos_not_interest_max)
Instantiate a ConstantExtrapolationRule.
Definition constant_extrapolation_rule.hpp:104

ddc::ConstantExtrapolationRule< DimI, DimNI >::operator()
KOKKOS_FUNCTION double operator()(CoordType coord_extrap, ddc::ChunkSpan< double const, ddc::DiscreteDomain< BSplines1, BSplines2 >, Layout, MemorySpace > const spline_coef) const
Get the value of the function on B-splines at a coordinate outside the domain.
Definition constant_extrapolation_rule.hpp:148

ddc::ConstantExtrapolationRule< DimI, DimNI >::ConstantExtrapolationRule
ConstantExtrapolationRule(ddc::Coordinate< DimI > eval_pos)
Instantiate a ConstantExtrapolationRule.
Definition constant_extrapolation_rule.hpp:125

ddc::ConstantExtrapolationRule< DimI >::operator()
KOKKOS_FUNCTION double operator()(CoordType pos, ddc::ChunkSpan< double const, ddc::DiscreteDomain< BSplines >, Layout, MemorySpace > const spline_coef) const
Get the value of the function on B-splines at a coordinate outside the domain.
Definition constant_extrapolation_rule.hpp:53

ddc::ConstantExtrapolationRule< DimI >::ConstantExtrapolationRule
ConstantExtrapolationRule(ddc::Coordinate< DimI > eval_pos)
Instantiate a ConstantExtrapolationRule.
Definition constant_extrapolation_rule.hpp:42

ddc::NonUniformBsplinesKnots
Definition bsplines_non_uniform.hpp:32

ddc::NullExtrapolationRule
A functor describing a null extrapolation boundary value for 1D spline evaluator.
Definition null_extrapolation_rule.hpp:15

ddc::NullExtrapolationRule::operator()
KOKKOS_FUNCTION double operator()(CoordType, ChunkSpan) const
Evaluates the spline at a coordinate outside of the domain.
Definition null_extrapolation_rule.hpp:22

ddc::PeriodicExtrapolationRule
Definition periodic_extrapolation_rule.hpp:14

ddc::PeriodicExtrapolationRule::operator()
KOKKOS_FUNCTION double operator()(CoordType, ChunkSpan) const
Definition periodic_extrapolation_rule.hpp:18

ddc::UniformBsplinesKnots
Definition bsplines_uniform.hpp:36

ddc::is_non_uniform_bsplines
Definition bsplines_non_uniform.hpp:396

ddc::is_uniform_bsplines
Definition bsplines_uniform.hpp:374