polynomial.hpp

/*
 *    This file is part of CasADi.
 *
 *    CasADi -- A symbolic framework for dynamic optimization.
 *    Copyright (C) 2010-2023 Joel Andersson, Joris Gillis, Moritz Diehl,
 *                            KU Leuven. All rights reserved.
 *    Copyright (C) 2011-2014 Greg Horn
 *
 *    CasADi 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.
 *
 *    CasADi 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 CasADi; if not, write to the Free Software
 *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */
 
 
#ifndef CASADI_POLYNOMIAL_HPP
#define CASADI_POLYNOMIAL_HPP
 
# include "printable.hpp"
 
namespace casadi {
 
  class CASADI_EXPORT Polynomial : public Printable<Polynomial> {
  public:
 
    Polynomial(double scalar=1);
 
    Polynomial(double p0, double p1);
 
    Polynomial(double p0, double p1, double p2);
 
    Polynomial(double p0, double p1, double p2, double p3);
 
    template<typename T>
    Polynomial(const std::vector<T>& coeff) : p_(coeff.begin(), coeff.end()) {}
 
    template<typename T>
    T operator()(const T& x) const {
      auto it = p_.rbegin();
      T ret = *it++;
      while (it!=p_.rend()) {
        ret *= x;
        ret += *it++;
      }
      return ret;
    }
 
    const std::vector<double>& coeff() const { return p_; }
 
    casadi_int degree() const;
 
    double scalar() const;
 
    Polynomial derivative() const;
 
    Polynomial anti_derivative() const;
 
    void trim();
 
    std::string type_name() const {return "Polynomial";}
 
    void disp(std::ostream& stream, bool more=false) const;
 
    // Add
    Polynomial operator+(const Polynomial& b) const;
 
    // Add (in-place)
    Polynomial& operator+=(const Polynomial& b);
 
    // Subtract
    Polynomial operator-(const Polynomial& b) const;
 
    // Subtract (in-place)
    Polynomial& operator-=(const Polynomial& b);
 
    // Multiply
    Polynomial operator*(const Polynomial& b) const;
 
    // Multiply (in-place)
    Polynomial& operator*=(const Polynomial& b);
 
    // Divide by constant
    Polynomial operator/(double b) const;
 
    // Divide by constant (in-place)
    Polynomial& operator/=(double b);
 
 
  protected:
    std::vector<double> p_;
  };
 
} // namespace casadi
 
 
#endif // CASADI_POLYNOMIAL_HPP