mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-16 11:52:34 +03:00
45 lines
808 B
C
45 lines
808 B
C
/*
|
|
* 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);
|
|
}
|