Implements the activation function. The array is modified according to the activation function being used. See the class description for more specific information on this type of activation function.
@param d The input array to the activation function.
@param start The starting index.
@param size The number of values to calculate.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.