internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType > Struct Template Reference

#include <deal.II/matrix_free/mapping_info.h>

Public Member Functions
	FPArrayComparator (const Number scaling)
bool	operator() (const std::vector< Number > &v1, const std::vector< Number > &v2) const
bool	operator() (const Tensor< 1, VectorizedArrayType::size(), Number > &t1, const Tensor< 1, VectorizedArrayType::size(), Number > &t2) const
template<int dim>
bool	operator() (const Tensor< 1, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &t1, const Tensor< 1, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &t2) const
template<int dim>
bool	operator() (const Tensor< 2, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &t1, const Tensor< 2, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &t2) const
template<int dim>
bool	operator() (const std::array< Tensor< 2, dim, Number >, dim+1 > &t1, const std::array< Tensor< 2, dim, Number >, dim+1 > &t2) const

Public Attributes
Number	tolerance

Detailed Description

template<typename Number, typename VectorizedArrayType = VectorizedArray<Number>>
struct internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >

A class that is used to compare floating point arrays (e.g. std::vectors, Tensor<1,dim>, etc.). The idea of this class is to consider two arrays as equal if they are the same within a given tolerance. We use this comparator class within a std::map<> of the given arrays. Note that this comparison operator does not satisfy all the mathematical properties one usually wants to have (consider e.g. the numbers a=0, b=0.1, c=0.2 with tolerance 0.15; the operator gives a<c, but neither a<b? nor b<c? is satisfied). This is not a problem in the use cases for this class, but be careful when using it in other contexts.

Definition at line 566 of file mapping_info.h.

Constructor & Destructor Documentation

FPArrayComparator()

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::FPArrayComparator

(

const Number

scaling

)

Member Function Documentation

operator()() [1/5]

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

bool internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::operator()	(	const std::vector< Number > &	v1,
		const std::vector< Number > &	v2
	)		const

Compare two vectors of numbers (not necessarily of the same length)

operator()() [2/5]

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

bool internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::operator()	(	const Tensor< 1, VectorizedArrayType::size(), Number > &	t1,
		const Tensor< 1, VectorizedArrayType::size(), Number > &	t2
	)		const

Compare two vectorized arrays (stored as tensors to avoid alignment issues).

operator()() [3/5]

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

template<int dim>

bool internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::operator()	(	const Tensor< 1, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &	t1,
		const Tensor< 1, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &	t2
	)		const

Compare two rank-1 tensors of vectorized arrays (stored as tensors to avoid alignment issues).

operator()() [4/5]

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

template<int dim>

bool internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::operator()	(	const Tensor< 2, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &	t1,
		const Tensor< 2, dim, Tensor< 1, VectorizedArrayType::size(), Number >> &	t2
	)		const

Compare two rank-2 tensors of vectorized arrays (stored as tensors to avoid alignment issues).

operator()() [5/5]

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

template<int dim>

bool internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::operator()	(	const std::array< Tensor< 2, dim, Number >, dim+1 > &	t1,
		const std::array< Tensor< 2, dim, Number >, dim+1 > &	t2
	)		const

Compare two arrays of tensors.

Member Data Documentation

tolerance

template<typename Number , typename VectorizedArrayType = VectorizedArray<Number>>

Number internal::MatrixFreeFunctions::FPArrayComparator< Number, VectorizedArrayType >::tolerance

Definition at line 618 of file mapping_info.h.

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The documentation for this struct was generated from the following file:

• include/deal.II/matrix_free/mapping_info.h