/***************************************************************************
 *   Copyright (C) 2010 by Michael Fischer                                 *
 *   fischer-michael@cs.yale.edu                                           *
 *                                                                         *
 *   For use in Yale course CPSC 467b, Spring 2010                         *
 ***************************************************************************/

#include <stdio.h>
#include "stopwatch.h"

void startTime( stopwatch* sw )
{
	gettimeofday( &sw->start, NULL );

}
void stopTime( stopwatch* sw )
{
	gettimeofday( &sw->stop, NULL );
}
void printElapsedTime( stopwatch* sw )
{
	  int seconds = sw->stop.tv_sec - sw->start.tv_sec;
	  int useconds = sw->stop.tv_usec - sw->start.tv_usec;
	  if ( useconds < 0 ) {
	    useconds += 1000000;
	    seconds--;
	  }
	  printf( "Elapsed time %d.%06d\n", seconds, useconds);

}