SortingUtils.H File Reference

#include "Particles/WarpXParticleContainer.H"
#include <AMReX_Gpu.H>
#include <AMReX_Partition.H>
#include <AMReX_ParticleUtil.H>

Go to the source code of this file.

Classes
class	fillBufferFlag
	Functor that fills the elements of the particle array inexflag with the value of the spatial array bmasks, at the corresponding particle position. More...
class	fillBufferFlagRemainingParticles
	Functor that fills the elements of the particle array inexflag with the value of the spatial array bmasks, at the corresponding particle position. More...
class	copyAndReorder< T >
	Functor that copies the elements of src into dst, while reordering them according to indices. More...

Functions
void	fillWithConsecutiveIntegers (amrex::Gpu::DeviceVector< int > &v)
	Fill the elements of the input vector with consecutive integer, starting from 0.
template<typename ForwardIterator>
ForwardIterator	stablePartition (ForwardIterator const index_begin, ForwardIterator const index_end, amrex::Gpu::DeviceVector< int > const &predicate)
	Find the indices that would reorder the elements of predicate so that the elements with non-zero value precede the other elements.
template<typename ForwardIterator>
int	iteratorDistance (ForwardIterator const first, ForwardIterator const last)
	Return the number of elements between first and last.

Function Documentation

fillWithConsecutiveIntegers()

void fillWithConsecutiveIntegers

(

amrex::Gpu::DeviceVector< int > &

v

)

Fill the elements of the input vector with consecutive integer, starting from 0.

Parameters

[in,out]

v

Vector of integers, to be filled by this routine

iteratorDistance()

template<typename ForwardIterator>

int iteratorDistance	(	ForwardIterator const	first,
		ForwardIterator const	last )

Return the number of elements between first and last.

Template Parameters

ForwardIterator

An iterator that supports std::distance

Parameters

[in]	first	Points to a position in a vector
[in]	last	Points to another position in a vector

Returns

The number of elements between first and last

stablePartition()

template<typename ForwardIterator>

ForwardIterator stablePartition	(	ForwardIterator const	index_begin,
		ForwardIterator const	index_end,
		amrex::Gpu::DeviceVector< int > const &	predicate )

Find the indices that would reorder the elements of predicate so that the elements with non-zero value precede the other elements.

Template Parameters

ForwardIterator

An iterator that supports std::advance

Parameters

[in,out]	index_begin	Point to the beginning of the vector which is to be filled with these indices
[in,out]	index_end	Point to the end of the vector which is to be filled with these indices
[in]	predicate	that indicates the elements that need to be reordered first