regularity_threesum.c File Reference

#include <cmr/regular.h>
#include <assert.h>
#include <stdlib.h>
#include "env_internal.h"
#include "matroid_internal.h"
#include "regularity_internal.h"

Classes
struct	GraphNode

Enumerations
enum	ElementType {   ELEMENT_TYPE_NONE , ELEMENT_TYPE_NORMAL , ELEMENT_TYPE_SOURCE , ELEMENT_TYPE_TARGET ,   REMOVED = 0 , ZERO = 1 , BLOCK = 2 , OTHER = 3 }

Functions
static CMR_ERROR	findSubmatrixCycle (CMR *cmr, CMR_CHRMAT *matrix, CMR_CHRMAT *transpose, ElementType *rowTypes, ElementType *columnTypes, CMR_ELEMENT *ppathSource, CMR_ELEMENT *ppathTarget, int *pentrySum)
	Finds a shortest path from any source to any target element. More...
CMR_ERROR	CMRregularityDecomposeThreeSum (CMR *cmr, DecompositionTask *task, DecompositionQueue *queue, CMR_SEPA *separation)
	Applies a 3-sum decomposition. More...

Enumeration Type Documentation

ElementType

enum ElementType

Enumerator
ELEMENT_TYPE_NONE	Row/column does not belong to the submatrix.
ELEMENT_TYPE_NORMAL	Row/column belongs to the submatrix.
ELEMENT_TYPE_SOURCE	Row/column is a source.
ELEMENT_TYPE_TARGET	Row/column is a target.
REMOVED
ZERO
BLOCK
OTHER

Function Documentation

CMRregularityDecomposeThreeSum()

CMR_ERROR CMRregularityDecomposeThreeSum	(	CMR *	cmr,
		DecompositionTask *	task,
		DecompositionQueue *	queue,
		CMR_SEPA *	separation
	)

Applies a 3-sum decomposition.

Parameters

cmr	CMR environment.
task	Task to be processed; already removed from the list of unprocessed tasks.
queue	Queue of unprocessed nodes.
separation	3-separation.

findSubmatrixCycle()

static CMR_ERROR findSubmatrixCycle ( CMR *  cmr, CMR_CHRMAT *  matrix, CMR_CHRMAT *  transpose, ElementType *  rowTypes, ElementType *  columnTypes, CMR_ELEMENT *  ppathSource, CMR_ELEMENT *  ppathTarget, int *  pentrySum  )

static

Finds a shortest path from any source to any target element.

Parameters

cmr	CMR environment.
matrix	Matrix.
transpose	Transpose of matrix.
rowTypes	Array with rows' types.
columnTypes	Array with columns' types.
ppathSource	Pointer for storing the source row/column.
ppathTarget	Pointer for storing the target row/column.
pentrySum	Pointer for storing the sum of the path's entries.