Accord.Statistics.Testing.Power.BaseTwoSamplePowerAnalysis.ComputeSize C# (CSharp) Method

        public virtual void ComputeSize()
        {
            double requiredPower = Power;

            // Attempt to locate the optimal sample size
            // to attain the required power by locating
            // a zero in the difference function:

            double sol = BrentSearch.FindRoot(alpha =>
            {
                Size = alpha;
                ComputePower();

                return requiredPower - Power;
            },

            lowerBound: 0,
            upperBound: 1);


            // Check it
            Size = sol;
            ComputePower();

            double newPower = Power;
            Power = requiredPower;

            if (Math.Abs(requiredPower - newPower) > 1e-5)
                Effect = Double.NaN;
        }