/* 
 * File:
 *   expt.h
 * Author:
 *   Samuel A. Rebelsky
 * Version:
 *   1.0 of March 2003.
 * Summary:
 *   A header file for a simple implementation of exponentiation.
 */

#ifndef _EXPT_H_
#define _EXPT_H_

/*
 * Procedure:
 *   expt
 * Parameters:
 *   val, a double
 *   power, a non-negative integer
 * Purpose:
 *   Compute val^power.
 * Produces:
 *   result, a double.
 * Preconditions:
 *   power >= 0.
 *   val^power is representable.
 * Postconditions:
 *   result = val^power.
 */
double expt(double val, int power);

#endif /* _EXPT_H_ */