NodeDescriptor Class Reference

#include <fei_NodeDescriptor.hpp>

Public Member Functions
bool	getFieldEqnNumber (int fieldID, int &eqnNumber) const
void	getFieldID (int eqnNumber, int &fieldID, int &offset_into_field) const

Detailed Description

The NodeDescriptor class holds the information that the FEI implementation needs to know about the nodes in the finite element problem:

Global node identifier number of nodal degrees-of-freedom list of associated field identifiers, with their (global) equation numbers (global) blk-eqn number which processor is this node's owner list of (local) blocks that contain this node

Note: 'block' is used in two contexts here. There are element-blocks, and there are block-equations. Element-blocks refer to the blocks of elements in the finite-element problem, with all elements in a block containing the same number of solution fields per node, etc. Block-equations refer to the small dense sub-blocks of a block-entry sparse matrix. Each node is associated with a number of element-blocks, and each node has exactly one associated global 0-based block-equation number.

Definition at line 36 of file fei_NodeDescriptor.hpp.

Member Function Documentation

bool NodeDescriptor::getFieldEqnNumber	(	int	fieldID,
		int &	eqnNumber
	)		const

Given a fieldID, return the first equation number associated with that field at this node.

Parameters

fieldID
eqnNumber

Returns

false if fieldID is not present at this node

Definition at line 89 of file fei_NodeDescriptor.cpp.

void NodeDescriptor::getFieldID	(	int	eqnNumber,
		int &	fieldID,
		int &	offset_into_field
	)		const

Given an equation-number, get the associated fieldID and offset-into-field. throws an exception if the equation-number is not associated with this node.

Definition at line 104 of file fei_NodeDescriptor.cpp.

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

• fei_NodeDescriptor.hpp
• fei_NodeDescriptor.cpp