# c/test12.c

    /*  This file is part of MED.
     *
     *  COPYRIGHT (C) 1999 - 2012  EDF R&D, CEA/DEN
     *  MED is free software: you can redistribute it and/or modify
     *  it under the terms of the GNU Lesser General Public License as published by
     *  the Free Software Foundation, either version 3 of the License, or
     *  (at your option) any later version.
     *
     *  MED is distributed in the hope that it will be useful,
     *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     *  GNU Lesser General Public License for more details.
     *
     *  You should have received a copy of the GNU Lesser General Public License
     *  along with MED.  If not, see <http://www.gnu.org/licenses/>.
     */

    /******************************************************************************
     * - Nom du fichier : test12.c
     *
     * - Description : ecriture d'une equivalence dans un maillage MED
     *
     *****************************************************************************/

    #include <med.h>
    #define MESGERR 1
    #include <med_utils.h>

    #ifdef DEF_LECT_ECR
    #define MODE_ACCES MED_ACC_RDWR
    #elif DEF_LECT_AJOUT
    #define MODE_ACCES MED_ACC_RDEXT
    #else
    #define MODE_ACCES MED_ACC_CREAT
    #endif

    int main (int argc, char **argv)

    {
      med_idt fid;
      char maa[MED_NAME_SIZE+1]= "maa1";
      char equ[MED_NAME_SIZE+1] = "equivalence";
      char des[MED_COMMENT_SIZE+1] = "equivalence sur les mailles MED_TRIA3";
      med_int mdim = 3;
      med_int ncor = 3;
      med_int cor[6] = {1,2,3,4,5,6};
      char    nomcoo[3*MED_SNAME_SIZE+1] = "x               y               z               ";
      char    unicoo[3*MED_SNAME_SIZE+1] = "cm              cm              cm              ";

      /* Creation du fichier "test12.med" */
      if ((fid = MEDfileOpen("test12.med",MODE_ACCES)) < 0) {
        MESSAGE("Erreur a la creation du fichier test12.med");
        return -1;
      }

      if (MEDmeshCr( fid, maa, 3, 3, MED_UNSTRUCTURED_MESH,
                     "un maillage pour test12","s", MED_SORT_DTIT,
                     MED_CARTESIAN, nomcoo, unicoo) < 0) {
        MESSAGE("Erreur a la creation du maillage : "); SSCRUTE(maa);
        return -1;
      }

      /* Creation de l'equivalence */
      if (MEDequivalenceCr(fid,maa,equ,des) < 0) {
        MESSAGE("Erreur a la creation de l'equivalence");
        return -1;
      }

      /* Ecriture des sur les mailles MED_TRIA3 */
      if (MEDequivalenceCorrespondenceWr(fid,maa,equ,MED_NO_DT,MED_NO_IT,
                                         MED_CELL,MED_TRIA3,ncor,cor) < 0) {
        MESSAGE("Erreur a l'ecriture du tableau des correspondances");
        return -1;
      }
      /* Fermeture du fichier */
      if (MEDfileClose(fid) < 0) {
        MESSAGE("Erreur a la fermeture du fichier");
        return -1;
      }

      return 0;
    }