1 /* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 
3 /*
4  Copyright (C) 2006 Joseph Wang
5 
6  This file is part of QuantLib, a free-software/open-source library
7  for financial quantitative analysts and developers - http://quantlib.org/
8 
9  QuantLib is free software: you can redistribute it and/or modify it
10  under the terms of the QuantLib license.  You should have received a
11  copy of the license along with this program; if not, please email
12  <quantlib-dev@lists.sf.net>. The license is also available online at
13  <http://quantlib.org/license.shtml>.
14 
15  This program is distributed in the hope that it will be useful, but WITHOUT
16  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17  FOR A PARTICULAR PURPOSE.  See the license for more details.
18 */
19 
20 /*! \file curve.hpp
21     \brief Curve
22 */
23 
24 #ifndef quantlib_curve_hpp
25 #define quantlib_curve_hpp
26 
27 #include <ql/types.hpp>
28 #include <functional>
29 
30 namespace QuantLib {
31 
32     //! abstract curve class
33     class Curve {
34       public:
35         typedef Real argument_type;
36         typedef Real result_type;
~Curve()37         virtual ~Curve() {}
38         virtual Real operator()(Real x) const = 0;
39     };
40 
41 }
42 
43 
44 #endif
45