TestCaseNonLinearity.hpp

Go to the documentation of this file.

// Class to provide a non-linear function
 
//
//
// Author: Jerome Droniou (jerome.droniou@monash.edu)
//
 
/*
*
* This library was developed around HHO methods, although some parts of it have a more
* general purpose. If you use this code or part of it in a scientific publication, 
* please mention the following book as a reference for the underlying principles
* of HHO schemes:
*
* The Hybrid High-Order Method for Polytopal Meshes: Design, Analysis, and Applications.
* D. A. Di Pietro and J. Droniou. 2019, 516p. 
* url: https://hal.archives-ouvertes.fr/hal-02151813.
*
*/
 
 
#ifndef _TEST_CASE_NONLINEARITY_HPP
#define _TEST_CASE_NONLINEARITY_HPP
 
#include <functional>
#include <string>
 
namespace HArDCore2D {}
 
using namespace HArDCore2D;
 
// ----------------------------------------------------------------------------
//                            Class definition
// ----------------------------------------------------------------------------
 
// @addtogroup TestCases
 
class TestCaseNonLinearity {
 
public:
  using nonlinearity_function_type = std::function<double(double,std::string)>;    
 
  TestCaseNonLinearity(
    const int iTCNL,  
    const double m=1.0    
  );
 
  double nonlinearity(
    const double s,
    const std::string type      
  );
 
private:
  // id of test case
  const int m_iTCNL;
  // PME nonlinearity
  const int m_m;
 
    // Sign function
  double sign(const double s) const {
    double val = 0;
    if (s>0){
        val = 1;
    }else if (s<0){
        val = -1;
    }
    return val; 
  };
 
};
 
 
 
#endif //_TEST_CASE_NONLINEARITY_HPP