UserUnaryFunction.cpp

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#include <UserUnaryFunction.h>
// il faut include LecFicDiffuse.h pour la definition du label AVEC_PARSER
#include <LecFicDiffuse.h>
#include <algorithm>
 
Implemente_instanciable(UserUnaryFunction,"UserUnaryFunction",UnaryFunction);
 
 
 
 
/*! @brief Ecriture sur un flot de sortie Ecrit la valeur de la constante
 *
 * @param (Sortie& os) le flot de sortie a utiliser
 * @return (Sortie&) le flot de sortie modifie
 */
Sortie& UserUnaryFunction::printOn(Sortie& os) const
{
 
  return os;
}
 
 
/*! @brief Lit la valeur de la constante
 *
 * @param (Entree& is) le flot d'entree a utiliser
 * @return (Entree&) le flot d'entree modifie
 */
Entree& UserUnaryFunction::readOn(Entree& is)
{
#ifdef AVEC_PARSER
  Nom sfunc, nom, inco;
 
  is >> nom;
  is >> inco;
  is >> sfunc;
 
 
  setFunction(nom,inco, sfunc);
 
  LecFicDiffuse& f = verif_cast(LecFicDiffuse&, is);
  {
    f.parser().addFunc(*this);
    p.setPere(f.parser());
  }
  p.parseString();
  Cerr << "Interpretation of the function " << sfunc << " OK" << finl;
 
 
#else
  Cerr << " UserUnaryFunction : TRUST must be re-compiled with accounting for the PARSER mode" << finl;
  Cerr <<" See file Lec_Fic_Dif.h" << finl;
  exit();
#endif
  return is;
}
 
void UserUnaryFunction::setFunction(Nom& name, Nom& inco, Nom& func)
{
  nom_ = name;
  inconnue = inco;
 
  std::string sfunc(func.getString());
  std::transform(sfunc.begin(), sfunc.end(), sfunc.begin(), ::toupper);
 
  p.setString(sfunc);
  p.addVar(inco.getChar());
}
 
double UserUnaryFunction::eval(double x)
{
  p.setVar(0,x);
  return p.eval();
}