Discretization

Discretization classes and algorithms provided by the library. More...

Collaboration diagram for Discretization:

Functions
template<typename FacetType >
auto	Feel::facetGlobalToLocal (FacetType &&f)
	get the local indexing of a facet from the global id More...
template<typename FacetType , typename DofTableType >
auto	Feel::facetGlobalToLocal (FacetType &&f, DofTableType &&dof)
	get the local indexing of a facet from the global id and a doftable More...
template<typename... Ts>
auto	Feel::maxelt (Ts &&... v)
	compute the max of the element of a function space at DOF points over the range r More...
template<typename... Ts>
auto	Feel::minelt (Ts &&... v)
	compute the min of the element of a function space at DOF points over the range r More...
template<typename... Ts>
auto	Feel::minmaxelt (Ts &&... v)
	compute the min of the element of a function space at DOF points over the range r More...
template<typename... Ts>
auto	Feel::opelt (Ts &&... v)
	compute the min of the element of a function space at DOF points over the range r More...
template<typename... Ts>
auto	Feel::opselt (Ts &&... v)
	compute the set of operations ops of the element of a function space at DOF points over the range r More...

Detailed Description

Discretization classes and algorithms provided by the library.

Function Documentation

facetGlobalToLocal() [1/2]

template<typename FacetType >

auto Feel::facetGlobalToLocal

(

FacetType &&

f

)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/facet.hpp>

get the local indexing of a facet from the global id

Template Parameters

FacetType

type of face

Parameters

f

facet

Returns

a tuple containing the element 0 or 1 to which the facet belongs and the local index of the facet in this element

facetGlobalToLocal() [2/2]

template<typename FacetType , typename DofTableType >

auto Feel::facetGlobalToLocal	(	FacetType &&	f,
		DofTableType &&	dof
	)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/facet.hpp>

get the local indexing of a facet from the global id and a doftable

Warning

if the tuple {-1,-1} is returned it means with are on a partial mesh and the facet is in it

Template Parameters

FacetType	type of facet
DofTableType	type of doftable

Parameters

f	facet
dof	doftable

Returns

a tuple containing the element 0 or 1 to which the facet belongs and the local index of the facet in this element

maxelt()

template<typename... Ts>

auto Feel::maxelt

(

Ts &&...

v

)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/minmax.hpp>

compute the max of the element of a function space at DOF points over the range r

Template Parameters

RangeT	range type to iterate on
ElementT	type of finite element function

Parameters

r	range of element
e	element of a function space

auto v = Xh->element();
auto [max_v,arg_max_v] = maxelt(_range=elements(mesh),_element=v);

Returns

the max value and the dof point coordinates

minelt()

template<typename... Ts>

auto Feel::minelt

(

Ts &&...

v

)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/minmax.hpp>

compute the min of the element of a function space at DOF points over the range r

Template Parameters

RangeT	range type to iterate on
ElementT	type of finite element function

Parameters

r	range of element
e	element of a function space

auto v = Xh->element();
auto [min_v,arg_min_v] = minelt(_range=elements(mesh),_element=v);

Returns

the min value and the dof point coordinates

minmaxelt()

template<typename... Ts>

auto Feel::minmaxelt

(

Ts &&...

v

)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/minmax.hpp>

compute the min of the element of a function space at DOF points over the range r

Template Parameters

RangeT	range type to iterate on
ElementT	type of finite element function

Parameters

r	range of element
e	element of a function space

auto v = Xh->element();
auto r = minmaxelt(_range=elements(mesh),_element=v);
for( auto const& [o_v,arg_o_v] : enumerate(r) )
{
     std::cout << "i: " << o_v << ", " << arg_o_v << std::endl;
}
r[0]; // min
r[1]; // max

Returns

the min value and the dof point coordinates

opelt()

template<typename... Ts>

auto Feel::opelt

(

Ts &&...

v

)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/minmax.hpp>

compute the min of the element of a function space at DOF points over the range r

Template Parameters

Ts	variadic template holding the type list of arguments

Parameters

_range	range of element
_element	element of a function space
_op	operation to apply to the element

auto v = Xh->element();
auto [op_v,arg_op_v] = minelt(_range=elements(mesh),_element=v,_op=[](auto const& a, auto const& b){ return a < b; });

Returns

the value and the dof point coordinates

opselt()

template<typename... Ts>

auto Feel::opselt

(

Ts &&...

v

)

#include </data/cemosis/github-actions-runner/actions-runner-feelpp-1/_work/feelpp/feelpp/feelpp/feel/feeldiscr/minmax.hpp>

compute the set of operations ops of the element of a function space at DOF points over the range r

Template Parameters

Ts	variadic template holding the type list of arguments

Parameters

_range	range of element
_element	element of a function space
_op	std::vector of operations(lambda functions) to apply to the element

auto v = Xh->element();
auto res = minelt(_range=elements(mesh),_element=v,_op=[](auto const& a, auto const& b){ return a < b; });
// loop on results
for( auto item: res )
{
  auto [op_v, arg_op_v] = item;
  // do something
}

Returns

the vector of results and associated dof point coordinates