// This appears in Core Web Programming from
// Prentice Hall Publishers, and may be freely used
// or adapted. 1997 Marty Hall, hall@apl.jhu.edu.

/** An interface for evaluating functions y = f(x) at
 *  a specific value. Both x and y are double precision
 *  floating point numbers.
 * @see Integral
 */

public interface Evaluatable {
  public double evaluate(double value);
}