001    package org.expasy.jpl.commons.base;
002    
003    
004    /**
005     * Any class that can be evaluate as a double needs to implement this interface.
006     * 
007     * @author nikitin
008     * 
009     * @version 1.0
010     * 
011     */
012    public interface Evaluable {
013            
014            /** evaluation of the {@code Evaluable} object */
015            double eval();
016    }