PPNormeL2<ChampVect3DHierarchique> lPPNormeL2(lMail);
      DReel lValU_x=0;
      DReel lValU_y=0;
      DReel lValU_z=0;
      lPPNormeL2.asgnParametres(*lChampGeo, lSchemaIntg);
      if (lMsg) lMsg = lPPNormeL2.ajouteChamp(lToto->reqComposante(0), lValU_x,0);
      if (lMsg) lMsg = lPPNormeL2.ajouteChamp(lToto->reqComposante(1), lValU_y,0);
      if (lMsg) lMsg = lPPNormeL2.ajouteChamp(lToto->reqComposante(2), lValU_z,0);
      if (lMsg) lMsg = lPPNormeL2.effectueCalcul();

      if (lMsg) {
        cout << "Norme L2(U_x) : " << lValU_x << endl;
        cout << "Norme L2(U_y) : " << lValU_y << endl;
        cout << "Norme L2(U_z) : " << lValU_z << endl;
      }



  DReel lNormInf(0.), lDiff(0.);

  if(lMsg){

    Maillage::IterateurSommetConst       lIterSommet    = lMaillage.reqSommetDebut();
    const Maillage::IterateurSommetConst lIterSommetFin = lMaillage.reqSommetFin();

    Maillage::IterateurAreteConst       lIterArete    = lMaillage.reqAreteDebut();
    const Maillage::IterateurAreteConst lIterAreteFin = lMaillage.reqAreteFin();

      while(lIterSommet != lIterSommetFin) {
        const Maillage::TypeSommet& lSommet = *lIterSommet;
        lToto->reqValeurSommet(lSommet,lDiff);
        lNormInf = std::max(lDiff,lNormInf);
        ++lIterSommet;
      }
      while(lIterArete != lIterAreteFin) {
        const Maillage::TypeArete& lArete = *lIterArete;
        lToto->reqValeurArete(lArete,lDiff);
        lNormInf = std::max(lDiff,lNormInf);
        ++lIterArete;
      }
    }
  }
  if(lMsg) std::cout<<"Norme Infinie Difference : "<<lNormInf<<std::endl;
}