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/*
 * difftime.c
 * Original Author:	G. Haley
 */
 
/*
FUNCTION
<<difftime>>---subtract two times
 
INDEX
	difftime
 
ANSI_SYNOPSIS
	#include <time.h>
	double difftime(time_t <[tim1]>, time_t <[tim2]>);
 
TRAD_SYNOPSIS
	#include <time.h>
	double difftime(<[tim1]>, <[tim2]>)
	time_t <[tim1]>;
	time_t <[tim2]>;
 
DESCRIPTION
Subtracts the two times in the arguments: `<<<[tim1]> - <[tim2]>>>'.
 
RETURNS
The difference (in seconds) between <[tim2]> and <[tim1]>, as a <<double>>.
 
PORTABILITY
ANSI C requires <<difftime>>, and defines its result to be in seconds
in all implementations.
 
<<difftime>> requires no supporting OS subroutines.
*/
 
#include <time.h>
 
double
_DEFUN (difftime, (tim1, tim2),
	time_t tim1 _AND
	time_t tim2)
{
  return ((double) tim1 - tim2);
}