mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-25 04:01:10 +00:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* Add two struct timespec values.
|
|
Copyright (C) 2011-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library and is also part of gnulib.
|
|
Patches to this file should be submitted to both projects.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* Return the sum of two timespec values A and B. On overflow, return
|
|
an extremal value. This assumes 0 <= tv_nsec < TIMESPEC_HZ. */
|
|
|
|
#include <config.h>
|
|
#include "timespec.h"
|
|
|
|
#include "intprops.h"
|
|
|
|
struct timespec
|
|
timespec_add (struct timespec a, struct timespec b)
|
|
{
|
|
time_t rs = a.tv_sec;
|
|
time_t bs = b.tv_sec;
|
|
int ns = a.tv_nsec + b.tv_nsec;
|
|
int nsd = ns - TIMESPEC_HZ;
|
|
int rns = ns;
|
|
|
|
if (0 <= nsd)
|
|
{
|
|
rns = nsd;
|
|
time_t bs1;
|
|
if (!INT_ADD_WRAPV (bs, 1, &bs1))
|
|
bs = bs1;
|
|
else if (rs < 0)
|
|
rs++;
|
|
else
|
|
goto high_overflow;
|
|
}
|
|
|
|
if (INT_ADD_WRAPV (rs, bs, &rs))
|
|
{
|
|
if (bs < 0)
|
|
{
|
|
rs = TYPE_MINIMUM (time_t);
|
|
rns = 0;
|
|
}
|
|
else
|
|
{
|
|
high_overflow:
|
|
rs = TYPE_MAXIMUM (time_t);
|
|
rns = TIMESPEC_HZ - 1;
|
|
}
|
|
}
|
|
|
|
return (struct timespec) { .tv_sec = rs, .tv_nsec = rns };
|
|
}
|