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
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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/>. */
|
|
|
|
#include <string.h>
|
|
#include <memcopy.h>
|
|
|
|
#undef strncmp
|
|
|
|
#ifndef STRNCMP
|
|
#define STRNCMP strncmp
|
|
#endif
|
|
|
|
/* Compare no more than N characters of S1 and S2,
|
|
returning less than, equal to or greater than zero
|
|
if S1 is lexicographically less than, equal to or
|
|
greater than S2. */
|
|
int
|
|
STRNCMP (const char *s1, const char *s2, size_t n)
|
|
{
|
|
unsigned char c1 = '\0';
|
|
unsigned char c2 = '\0';
|
|
|
|
if (n >= 4)
|
|
{
|
|
size_t n4 = n >> 2;
|
|
do
|
|
{
|
|
c1 = (unsigned char) *s1++;
|
|
c2 = (unsigned char) *s2++;
|
|
if (c1 == '\0' || c1 != c2)
|
|
return c1 - c2;
|
|
c1 = (unsigned char) *s1++;
|
|
c2 = (unsigned char) *s2++;
|
|
if (c1 == '\0' || c1 != c2)
|
|
return c1 - c2;
|
|
c1 = (unsigned char) *s1++;
|
|
c2 = (unsigned char) *s2++;
|
|
if (c1 == '\0' || c1 != c2)
|
|
return c1 - c2;
|
|
c1 = (unsigned char) *s1++;
|
|
c2 = (unsigned char) *s2++;
|
|
if (c1 == '\0' || c1 != c2)
|
|
return c1 - c2;
|
|
} while (--n4 > 0);
|
|
n &= 3;
|
|
}
|
|
|
|
while (n > 0)
|
|
{
|
|
c1 = (unsigned char) *s1++;
|
|
c2 = (unsigned char) *s2++;
|
|
if (c1 == '\0' || c1 != c2)
|
|
return c1 - c2;
|
|
n--;
|
|
}
|
|
|
|
return c1 - c2;
|
|
}
|
|
|
|
libc_hidden_builtin_def (STRNCMP)
|