/*
 * File:
 *   testexpt.c
 * Author:
 *   Samuel A. Rebelsky
 * Version:
 *   1.0 of March 2003.
 */

/*********************************************************************
 * Headers *
 ***********/

#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include "expt.h"


/*********************************************************************
 * Main *
 ********/

main(int argc, char *argv[]) {
  double value;
  int power;

  /* Sanity check. */
  if (argc != 3) {
    fprintf(stderr, "Usage: %s val power.\n", argv[0]);
    exit(EXIT_FAILURE);
  }
  
  /* Get the important values. */
  value = strtod(argv[1], NULL);
  power = (int) strtol(argv[2], NULL, 10);
  /* Do the computation and print the result. */
  printf("%f^%d = %f\n", value, power, expt(value,power));
  printf("e^(log(%f)*%d) = %f\n", value, power, 
         exp(log(value)*power));
  exit(EXIT_SUCCESS);
} /* main(int, char **) */