/* Copyright 2004,2007,2018,2019 IPB, Universite de Bordeaux, INRIA & CNRS
**
** This file is part of the Scotch software package for static mapping,
** graph partitioning and sparse matrix ordering.
**
** This software is governed by the CeCILL-C license under French law
** and abiding by the rules of distribution of free software. You can
** use, modify and/or redistribute the software under the terms of the
** CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
** URL: "http://www.cecill.info".
**
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** only with a limited warranty and the software's author, the holder of
** the economic rights, and the successive licensors have only limited
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**
** In this respect, the user's attention is drawn to the risks associated
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**
** The fact that you are presently reading this means that you have had
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*/
/************************************************************/
/**                                                        **/
/**   NAME       : library_graph_map_view.h                **/
/**                                                        **/
/**   AUTHOR     : Francois PELLEGRINI                     **/
/**                                                        **/
/**   FUNCTION   : These lines are the declarations for    **/
/**                the mapping viewing routines.           **/
/**                                                        **/
/**   DATES      : # Version 5.0  : from : 04 feb 2007     **/
/**                                 to   : 04 feb 2007     **/
/**                # Version 6.0  : from : 06 jun 2018     **/
/**                                 to   : 24 sep 2019     **/
/**                                                        **/
/************************************************************/

#define LIBRARY_GRAPH_MAP_VIEW_H

/*
**  The type definitions.
*/

/*+ Complementary vertex structure. +*/

typedef struct GraphMapViewVertex_ {
  Gnum                      passnum;              /*+ Number of pass when vertex selected   +*/
  Gnum                      vertdist;             /*+ Current distance from diameter vertex +*/
} GraphMapViewVertex;

/*+ Neighbor queue. +*/

typedef struct GraphMapViewQueue_ {
  Gnum *                    head;                 /*+ Head of distance queue  +*/
  Gnum *                    tail;                 /*+ Tail of distance queue  +*/
  Gnum *                    qtab;                 /*+ Array of queue elements +*/
} GraphMapViewQueue;

/*+ This structure stores part lists. +*/

typedef struct GraphMapViewList_ {
  Gnum                      vertnum;              /*+ Number of vertex of which part is neighbor +*/
  Gnum                      nextidx;              /*+ Pointer to index of next recorded neighbor +*/
} GraphMapViewList;

/*
**  The macro definitions.
*/

#define graphMapViewQueueFlush(queue) ((queue)->head = (queue)->tail = (queue)->qtab)
#define graphMapViewQueueEmpty(queue) ((queue)->head <= (queue)->tail)
#define graphMapViewQueuePut(queue,vnum) (* ((queue)->head ++) = (vnum))
#define graphMapViewQueueGet(queue) (* ((queue)->tail ++))
