text: /*This file is part of the FEBio source code and is licensed under the MIT license
  listed below.
  
  See Copyright-FEBio.txt for details.
  
  Copyright (c) 2020 University of Utah, The Trustees of Columbia University in 
  the City of New York, and others.
  
  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
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  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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  #pragma once
  #include <FECore/FEParameterList.h>
  
  //-----------------------------------------------------------------------------
  class FEOptimizeData;
  
  //-----------------------------------------------------------------------------
  enum {
  	PRINT_ITERATIONS,
  	PRINT_VERBOSE
  };
  
  //-----------------------------------------------------------------------------
  enum LogLevel {
  	LOG_NEVER,
  	LOG_FILE,
  	LOG_SCREEN,
  	LOG_FILE_AND_SCREEN
  };
  
  //-----------------------------------------------------------------------------
  //! Base class for optimization algorithms.
  //! Derived class implement specific optimization algorithms.
  class FEOptimizeMethod : public FEParamContainer
  {
  public:
  	FEOptimizeMethod() { m_print_level = PRINT_ITERATIONS; }
  
  	// Implement this function for solve an optimization problem
  	// should return the optimal values for the input parameters in a, the optimal
  	// values of the measurement vector in ymin and
  	// the corresponding objective value in obj.
  	// If this function returns false, something went wrong
  	virtual bool Solve(FEOptimizeData* pOpt, vector<double>& amin, vector<double>& ymin, double* minObj) = 0;
  
  public:
  	int		m_loglevel;		//!< log file output level
  	int		m_print_level;	//!< level of detailed output
  };
  