.. _program_listing_file_fields2cover_utils_spline.h:

Program Listing for File spline.h
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_fields2cover_utils_spline.h>` (``fields2cover/utils/spline.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*
    * spline.h
    *
    *  The original version of this file can be found at with:
    *  https://github.com/joshhooker/CubicSplineClass
    *
    *  This file has MIT license.
    *
    *  Actual version is modified to adapt to Fields2Cover requirements.
    *
    * ---------------------------------------------------------------------
    *  Copyright (c) 2017 Joshua Hooker
    *
    *  Permission is hereby granted, free of charge, to any person obtaining
    *  a copy of this software and associated documentation files (the "Software"),
    *  to deal in the Software without restriction, including without limitation
    *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
    *  and/or sell copies of the Software, and to permit persons to whom the
    *  Software is furnished to do so, subject to the following conditions:
    *
    *  The above copyright notice and this permission notice shall be included
    *  in all copies or substantial portions of the Software.
    *
    *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    *  DEALINGS IN THE SOFTWARE.
    * ---------------------------------------------------------------------
    *
    */
   
   
   #ifndef FIELDS2COVER_UTILS_SPLINE_H_
   #define FIELDS2COVER_UTILS_SPLINE_H_
   
   #include <vector>
   #include <string>
   
   namespace f2c {
   
   class CubicSpline {
    public:
     CubicSpline();
     CubicSpline(const std::vector<double> &x, const std::vector<double> &y,
         bool monotonic = false);
   
     ~CubicSpline();
   
     void SetPoints(const std::vector<double> &x, const std::vector<double> &y,
         bool monotonic = false);
   
     double operator()(double x) const;
   
   
    private:
     size_t size_{0};
     std::vector<double> x_vec_, y_vec_;
     std::vector<double> b_vec_, c_vec_, d_vec_;
   
     bool monotonic_{false};
   
     void SetSpline();
   
     void SetSplineCubic();
   
     void check_error(bool cond, const std::string& msg) const;
   };
   
   }  // namespace f2c
   
   #endif  // FIELDS2COVER_UTILS_SPLINE_H_