BipolarActivationFunction.cpp

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#include "BipolarActivationFunction.h"
#include <cmath>
#include <gsl/gsl_math.h>
#include <iostream>

BipolarActivationFunction::BipolarActivationFunction()
{}
BipolarActivationFunction::~BipolarActivationFunction()
{}

double BipolarActivationFunction::CalcOutput(const double input)
{
        return(tanh(0.5 * input)); 
}

double BipolarActivationFunction::CalcDeriv(const double input)
{
        //std::cout << " Bipolar Deriv: " << 0.5 * 1./gsl_pow_2(cosh(input)) << std::endl;
        return(0.5 * 1./gsl_pow_2(cosh(input)));
}

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