Reference documentation for deal.II version Git a1bedde 2018-04-20 20:30:45 +0200
ConstraintMatrix::ConstraintLine Struct Reference

#include <deal.II/lac/constraint_matrix.h>

## Public Types

typedef std::vector< std::pair< size_type, double > > Entries

## Public Member Functions

bool operator< (const ConstraintLine &) const

bool operator== (const ConstraintLine &) const

std::size_t memory_consumption () const

## Public Attributes

size_type index

Entries entries

double inhomogeneity

## Detailed Description

This class represents one line of a constraint matrix.

Definition at line 1130 of file constraint_matrix.h.

## Member Typedef Documentation

 typedef std::vector > ConstraintMatrix::ConstraintLine::Entries

A data type in which we store the list of entries that make up the homogenous part of a constraint.

Definition at line 1136 of file constraint_matrix.h.

## Member Function Documentation

 bool ConstraintMatrix::ConstraintLine::operator< ( const ConstraintLine & a ) const

This operator is a bit weird and unintuitive: it compares the line numbers of two lines. We need this to sort the lines; in fact we could do this using a comparison predicate. However, this way, it is easier, albeit unintuitive since two lines really have no god-given order relation.

Definition at line 75 of file constraint_matrix.cc.

 bool ConstraintMatrix::ConstraintLine::operator== ( const ConstraintLine & a ) const

This operator is likewise weird: it checks whether the line indices of the two operands are equal, irrespective of the fact that the contents of the line may be different.

Definition at line 83 of file constraint_matrix.cc.

 std::size_t ConstraintMatrix::ConstraintLine::memory_consumption ( ) const

Determine an estimate for the memory consumption (in bytes) of this object.

Definition at line 91 of file constraint_matrix.cc.

## Member Data Documentation

 size_type ConstraintMatrix::ConstraintLine::index

Global DoF index of this line. Since only very few lines are stored, we can not assume a specific order and have to store the index explicitly.

Definition at line 1143 of file constraint_matrix.h.

 Entries ConstraintMatrix::ConstraintLine::entries

Row numbers and values of the entries in this line.

For the reason why we use a vector instead of a map and the consequences thereof, the same applies as what is said for ConstraintMatrix::lines.

Definition at line 1152 of file constraint_matrix.h.

 double ConstraintMatrix::ConstraintLine::inhomogeneity

Value of the inhomogeneity.

Definition at line 1157 of file constraint_matrix.h.

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