Accord.Math.Normal.Derivative C# (CSharp) Method

First derivative of Normal cumulative distribution function, also known as the Normal density function.

public static Derivative ( double value ) : double
value	double
return	double

        public static double Derivative(double value)
        {
            return Math.Exp(-Constants.LogSqrt2PI - value * value * 0.5);
        }

Normal