Add strncmp() function..I need it and
hope nobody will eat me alive for this..:)
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=6761
@ -1,5 +1,5 @@
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# @(#)Makefile 7.9 (Berkeley) 6/1/93
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# $Id: Makefile,v 1.5 1994/10/26 11:14:21 jkh Exp $
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# $Id: Makefile,v 1.6 1995/01/10 01:57:56 bde Exp $
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.undef NOPROFILE
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@ -8,7 +8,7 @@ CFLAGS+= -I${.CURDIR} -I${.CURDIR}/.. -DKERNEL
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SRCS= adddi3.c anddi3.c ashldi3.c ashrdi3.c bcmp.c cmpdi2.c divdi3.c \
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ffs.c iordi3.c locc.c lshldi3.c lshrdi3.c mcount.c moddi3.c \
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muldi3.c negdi2.c notdi2.c qdivrem.c random.c rindex.c scanc.c \
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skpc.c strcat.c strcmp.c strcpy.c strlen.c strncpy.c \
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skpc.c strcat.c strcmp.c strcpy.c strlen.c strncmp.c strncpy.c \
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subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
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.if exists(${.CURDIR}/${MACHINE}/Makefile.inc)
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56
sys/libkern/strncmp.c
Normal file
56
sys/libkern/strncmp.c
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@ -0,0 +1,56 @@
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)strncmp.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/cdefs.h>
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#include <string.h>
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int
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strncmp(s1, s2, n)
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register const char *s1, *s2;
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register size_t n;
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{
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if (n == 0)
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return (0);
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do {
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if (*s1 != *s2++)
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return (*(unsigned char *)s1 - *(unsigned char *)--s2);
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if (*s1++ == 0)
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break;
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} while (--n != 0);
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return (0);
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}
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