#ifndef NEURAL_SLOPE_STD_H
#define NEURAL_SLOPE_STD_H

#include <math.h>

#include "neural/slope.h"

namespace Neural
{
	template<typename sigtype>
	sigtype tpltanh( sigtype sInput );

	template<>
	float tpltanh<float>( float sInput )
	{
		return tanhf( sInput );
	}

	template<>
	double tpltanh<double>( double sInput )
	{
		return tanh( sInput );
	}

	template<>
	long double tpltanh<long double>( long double sInput )
	{
		return tanhl( sInput );
	}

	template<typename sigtype>
	class SlopeStd : public Slope<sigtype>
	{
	public:
		SlopeStd( sigtype sSlope=1.0 ) :
			sSlope( sSlope )
		{
		}

		virtual ~SlopeStd()
		{
		}

		virtual sigtype operator()( sigtype sInput )
		{
			return (tpltanh<sigtype>(2.0*sSlope*sInput) + 1.0)/2.0;
		}

	private:
		sigtype sSlope;
	};
};

#endif