SigMF.h

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#ifndef         SIGMF_H_
# define        SIGMF_H_

#include "MembershipFn.h"   // for MembershipFn

namespace IRIS {

  using namespace std;

  namespace Fuzzy {

    class SigMF : public MembershipFn
    {

      public:

        static const unsigned NUM_PARMS = 2;

    //  CONSTRUCTORS  /////////////////////////////////////////////////////

        SigMF( double a=0 , double b=0 );
        SigMF( const string& name , 
               double   a=0 , double   b=0 ,
               double min=0 , double max=0                );
        SigMF( const MembershipFn::parm_list& parm );

    //  DESTRUCTORS  //////////////////////////////////////////////////////

        ~SigMF( );

    //  SET MEMBER FUNCTIONS (MUTATORS)  //////////////////////////////////

        void set ( double a=0 , double b=0 );

        // implemented virtual functions from IRIS::Fuzzy::Numeric
        virtual void discretize( unsigned degree );

    //  GET MEMBER FUNCTIONS (ACCESSORS)  /////////////////////////////////

        void get ( double &a , double &b );

        // implemented virtual functions from IRIS::Fuzzy::Numeric
        virtual double eval( double x ) const;
        virtual double operator() ( double val ) const;

        // implemented virtual functions from IRIS::Fuzzy::Set
        virtual void draw() const;

    }; // end of SigMF class

  } // end of Fuzzy namespace

} // end of IRIS namespace

#endif      /* !SIGMF_H_ */

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