Boiler.GenericControllerState.UpdateMeasurement C# (CSharp) Method

        public double UpdateMeasurement(AnalogItemState<double> source)
        {
            Range range = source.EURange.Value;
            m_measurement.Value = source.Value;

            // clamp the setpoint.
            if (range != null)
            {
                if (m_setPoint.Value > range.High)
                {
                    m_setPoint.Value = range.High;
                }
                
                if (m_setPoint.Value < range.Low)
                {
                    m_setPoint.Value = range.Low;
                }                
            }

            // calculate error.
            m_controlOut.Value = m_setPoint.Value - m_measurement.Value;

            if (range != null)
            {
                m_controlOut.Value /= range.Magnitude;

                if (Math.Abs(m_controlOut.Value) > 1.0)
                {
                    m_controlOut.Value = (m_controlOut.Value < 0)?-1.0:+1.0;
                }
            }

            // return the new output.
            return m_controlOut.Value;            
        }
        #endregion