| /* |
| * 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); |
| } |
