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author | Doug Evans <dje@google.com> | 2011-09-28 19:09:50 +0000 |
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committer | Doug Evans <devans@gcc.gnu.org> | 2011-09-28 19:09:50 +0000 |
commit | 8c850a5a7f5effe37a4a4261cab48375f5a13f7a (patch) | |
tree | c6b2cef2eb65af24805c3eb17f1e6207d9c1a47f /libiberty/timeval-utils.c | |
parent | be50fcea4e4482bff587119732223f1d4639f47b (diff) | |
download | gcc-8c850a5a7f5effe37a4a4261cab48375f5a13f7a.zip gcc-8c850a5a7f5effe37a4a4261cab48375f5a13f7a.tar.gz gcc-8c850a5a7f5effe37a4a4261cab48375f5a13f7a.tar.bz2 |
timeval-utils.h: New file.
include/
* timeval-utils.h: New file.
libiberty/
* timeval-utils.c: New file.
* Makefile.in (CFILES): Add it.
(REQUIRED_OFILES): Add timeval-utils.$(objext).
(INSTALLED_HEADERS): Add timeval-utils.h.
(timeval-utils.$(objext)): Add rule.
From-SVN: r179319
Diffstat (limited to 'libiberty/timeval-utils.c')
-rw-r--r-- | libiberty/timeval-utils.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/libiberty/timeval-utils.c b/libiberty/timeval-utils.c new file mode 100644 index 0000000..4c9f6a8 --- /dev/null +++ b/libiberty/timeval-utils.c @@ -0,0 +1,87 @@ +/* Basic struct timeval utilities. + Copyright (C) 2011 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; + } +} |