/* Basic struct timeval utilities.   Copyright (C) 2011-2026 Free Software Foundation, Inc. This file is part of the libiberty library.Libiberty is free software; you can redistribute it and/ormodify it under the terms of the GNU Library General PublicLicense as published by the Free Software Foundation; eitherversion 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNULibrary General Public License for more details. You should have received a copy of the GNU Library General PublicLicense 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 */  voidtimeval_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 */  voidtimeval_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;    }}