/* File: inc2.c
 *   
 * This file contains the implementations of the
 * functions used by inc1.c
 *
 */

/* Prototypes for the functions we use. */
int sum (int x, int y) ;
int max (int x, int y) ;
int min (int x, int y) ;
double avg (int x, int y) ;
int dist (int x, int y) ;

/* Function: sum
   Returns the sum of x and y.
*/
int sum (int x, int y) {

  return (x + y) ;
}

/* Function: max 
   Returns the larger of x and y.
*/
int max (int x, int y) {

   if (x > y) {
      return (x) ;
   } else {
      return (y) ;
   }
}

/* Function: min
   Returns the smaller of x and y.
*/
int min (int x, int y) {

   if (x < y) {
      return (x) ;
   } else {
      return (y) ;
   }
}

/* Function: avg
   Returns the average of x and y.
   Note: avg returns a *** double *** value.
*/
double avg (int x, int y) {
   double average ;
   
   average = (x + y) / 2.0 ;
   return (average) ;
}

/* Function: dist 
   Returns the absolute value of x - y.
*/
int dist (int x, int y) {
   int distance ;

   distance = x - y ;
   if (distance < 0) {
      return (- distance) ;
   } else {
      return (distance) ;
   }
}