text: //
  // Created by Alexander Winter on 2017-09-24.
  //
  
  #ifndef POLY_CONSTANT_H
  #define POLY_CONSTANT_H
  
  #include "expr/variable.h"
  #include "expr/expr_content.h"
  #include "expr/expression.h"
  
  
  namespace poly {
      class constant;
  }
  
  class poly::constant : public expr_content
  {
  public:
      bool is_constant() const override;
      poly::expression derivative(const variable &var) const override;
  };
  
  
  #endif //POLY_CONSTANT_H
  