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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);

}