text: /* Copyright 2007,2008,2010,2012,2018 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".
  **
  ** As a counterpart to the access to the source code and rights to copy,
  ** modify and redistribute granted by the license, users are provided
  ** only with a limited warranty and the software's author, the holder of
  ** the economic rights, and the successive licensors have only limited
  ** liability.
  **
  ** In this respect, the user's attention is drawn to the risks associated
  ** with loading, using, modifying and/or developing or reproducing the
  ** software by the user in light of its specific status of free software,
  ** that may mean that it is complicated to manipulate, and that also
  ** therefore means that it is reserved for developers and experienced
  ** professionals having in-depth computer knowledge. Users are therefore
  ** encouraged to load and test the software's suitability as regards
  ** their requirements in conditions enabling the security of their
  ** systems and/or data to be ensured and, more generally, to use and
  ** operate it in the same conditions as regards security.
  **
  ** The fact that you are presently reading this means that you have had
  ** knowledge of the CeCILL-C license and that you accept its terms.
  */
  /************************************************************/
  /**                                                        **/
  /**   NAME       : library_dgraph_order_io_block_f.c       **/
  /**                                                        **/
  /**   AUTHOR     : Francois PELLEGRINI                     **/
  /**                                                        **/
  /**   FUNCTION   : This module is the Fortran API for the  **/
  /**                distributed graph ordering routines of  **/
  /**                the libSCOTCH library.                  **/
  /**                                                        **/
  /**   DATES      : # Version 5.0  : from : 28 may 2008     **/
  /**                                 to   : 28 may 2008     **/
  /**                # Version 5.1  : from : 27 mar 2010     **/
  /**                                 to   : 27 mar 2010     **/
  /**                # Version 6.0  : from : 29 nov 2012     **/
  /**                                 to   : 25 apr 2018     **/
  /**                                                        **/
  /************************************************************/
  
  /*
  **  The defines and includes.
  */
  
  #define LIBRARY
  
  #include "module.h"
  #include "common.h"
  #include "ptscotch.h"
  
  /**************************************/
  /*                                    */
  /* These routines are the Fortran API */
  /* for the ordering routines.         */
  /*                                    */
  /**************************************/
  
  SCOTCH_FORTRAN (                              \
  DGRAPHORDERSAVEBLOCK, dgraphordersaveblock, ( \
  const SCOTCH_Dgraph * const     grafptr,      \
  const SCOTCH_Dordering * const  ordeptr,      \
  int * const                     fileptr,      \
  int * const                     revaptr),     \
  (grafptr, ordeptr, fileptr, revaptr))
  {
    FILE *              stream;                     /* Stream to build from handle */
    int                 filenum;                    /* Duplicated handle           */
    int                 o;
  
    if (*fileptr == -1)                             /* If process is not the root */
      stream = NULL;
    else {                                          /* Open stream for root process        */
      if ((filenum = dup (*fileptr)) < 0) {         /* If cannot duplicate file descriptor */
        errorPrint (STRINGIFY (SCOTCH_NAME_PUBLICFU (DGRAPHORDERSAVEBLOCK)) ": cannot duplicate handle");
        *revaptr = 1;                               /* Indicate error */
        return;
      }
      if ((stream = fdopen (filenum, "w")) == NULL) { /* Build stream from handle */
        errorPrint (STRINGIFY (SCOTCH_NAME_PUBLICFU (DGRAPHORDERSAVEBLOCK)) ": cannot open output stream");
        close      (filenum);
        *revaptr = 1;
        return;
      }
    }
  
    o = SCOTCH_dgraphOrderSaveBlock (grafptr, ordeptr, stream);
  
    if (stream != NULL)
      fclose (stream);                              /* This closes filenum too */
  
    *revaptr = o;
  }
  