mirror of
https://gcc.gnu.org/git/gcc.git
synced 2024-11-23 10:54:07 +08:00
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* Basic struct timeval utilities.
|
|
Copyright (C) 2011-2024 Free Software Foundation, Inc.
|
|
|
|
This file is part of the libiberty library.
|
|
Libiberty is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
Libiberty is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with libiberty; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
#include "config.h"
|
|
|
|
/* On some systems (such as WindISS), you must include <sys/types.h>
|
|
to get the definition of "time_t" before you include <time.h>. */
|
|
#include <sys/types.h>
|
|
|
|
#ifdef TIME_WITH_SYS_TIME
|
|
# include <sys/time.h>
|
|
# include <time.h>
|
|
#else
|
|
# if HAVE_SYS_TIME_H
|
|
# include <sys/time.h>
|
|
# else
|
|
# ifdef HAVE_TIME_H
|
|
# include <time.h>
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#include "timeval-utils.h"
|
|
|
|
/*
|
|
|
|
@deftypefn Extension void timeval_add (struct timeval *@var{a}, @
|
|
struct timeval *@var{b}, struct timeval *@var{result})
|
|
|
|
Adds @var{a} to @var{b} and stores the result in @var{result}.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
void
|
|
timeval_add (struct timeval *result,
|
|
const struct timeval *a, const struct timeval *b)
|
|
{
|
|
result->tv_sec = a->tv_sec + b->tv_sec;
|
|
result->tv_usec = a->tv_usec + b->tv_usec;
|
|
if (result->tv_usec >= 1000000)
|
|
{
|
|
++result->tv_sec;
|
|
result->tv_usec -= 1000000;
|
|
}
|
|
}
|
|
|
|
/*
|
|
|
|
@deftypefn Extension void timeval_sub (struct timeval *@var{a}, @
|
|
struct timeval *@var{b}, struct timeval *@var{result})
|
|
|
|
Subtracts @var{b} from @var{a} and stores the result in @var{result}.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
void
|
|
timeval_sub (struct timeval *result,
|
|
const struct timeval *a, const struct timeval *b)
|
|
{
|
|
result->tv_sec = a->tv_sec - b->tv_sec;
|
|
result->tv_usec = a->tv_usec - b->tv_usec;
|
|
if (result->tv_usec < 0)
|
|
{
|
|
--result->tv_sec;
|
|
result->tv_usec += 1000000;
|
|
}
|
|
}
|