diff options
author | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2018-08-13 19:39:40 +0100 |
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committer | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2018-08-22 10:26:05 +0100 |
commit | c6fdaa73633cae03e23ee62d55e2bd608bb4535c (patch) | |
tree | 0b964c140a5e64c36ba8094aa5a2b54a0071c4b7 /lib/libc/strncmp.c | |
parent | 8bb6de151892f20afcffe7cfa114710e0a47d6c6 (diff) |
libc: Import files from FreeBSD
From commit aafd1cf4235d78ce85b76d7da63e9589039344b3:
- sys/sys/endian.h
- sys/arm/include/endian.h
- sys/arm64/include/endian.h
- sys/sys/errno.h
- lib/libc/strchr.c
- lib/libc/strcmp.c
- lib/libc/strncmp.c
- lib/libc/strnlen.c
strcasecmp() hasn't been imported.
Change-Id: I8a0787aec9ba8960a008fb5c66f7a73c84919b93
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Diffstat (limited to 'lib/libc/strncmp.c')
-rw-r--r-- | lib/libc/strncmp.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/lib/libc/strncmp.c b/lib/libc/strncmp.c new file mode 100644 index 00000000..c68fe005 --- /dev/null +++ b/lib/libc/strncmp.c @@ -0,0 +1,54 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)strncmp.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <string.h> + +int +strncmp(const char *s1, const char *s2, size_t n) +{ + + if (n == 0) + return (0); + do { + if (*s1 != *s2++) + return (*(const unsigned char *)s1 - + *(const unsigned char *)(s2 - 1)); + if (*s1++ == '\0') + break; + } while (--n != 0); + return (0); +} |