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author | cvs2svn <cvs2svn@FreeBSD.org> | 2000-04-02 07:41:18 +0000 |
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committer | cvs2svn <cvs2svn@FreeBSD.org> | 2000-04-02 07:41:18 +0000 |
commit | b42951578188c5aab5c9f8cbcde4a743f8092cdc (patch) | |
tree | 87e472177973ff9d0a59ecabd43cb630c6936af9 /lib/libc/string/memset.c | |
parent | d45e1e2b8b3d88e925564212283fb9072a911a32 (diff) | |
download | FreeBSD-src-b42951578188c5aab5c9f8cbcde4a743f8092cdc.zip FreeBSD-src-b42951578188c5aab5c9f8cbcde4a743f8092cdc.tar.gz |
This commit was manufactured by cvs2svn to create branch 'ALSA'.
Diffstat (limited to 'lib/libc/string/memset.c')
-rw-r--r-- | lib/libc/string/memset.c | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/lib/libc/string/memset.c b/lib/libc/string/memset.c deleted file mode 100644 index afe5f96..0000000 --- a/lib/libc/string/memset.c +++ /dev/null @@ -1,132 +0,0 @@ -/*- - * Copyright (c) 1990, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Mike Hibler and Chris Torek. - * - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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[] = "@(#)memset.c 8.1 (Berkeley) 6/4/93"; -#endif /* LIBC_SCCS and not lint */ - -#include <sys/types.h> - -#include <limits.h> -#include <string.h> - -#define wsize sizeof(u_int) -#define wmask (wsize - 1) - -#ifdef BZERO -#define RETURN return -#define VAL 0 -#define WIDEVAL 0 - -void -bzero(dst0, length) - void *dst0; - register size_t length; -#else -#define RETURN return (dst0) -#define VAL c0 -#define WIDEVAL c - -void * -memset(dst0, c0, length) - void *dst0; - register int c0; - register size_t length; -#endif -{ - register size_t t; -#ifndef BZERO - register u_int c; -#endif - register u_char *dst; - - dst = dst0; - /* - * If not enough words, just fill bytes. A length >= 2 words - * guarantees that at least one of them is `complete' after - * any necessary alignment. For instance: - * - * |-----------|-----------|-----------| - * |00|01|02|03|04|05|06|07|08|09|0A|00| - * ^---------------------^ - * dst dst+length-1 - * - * but we use a minimum of 3 here since the overhead of the code - * to do word writes is substantial. - */ - if (length < 3 * wsize) { - while (length != 0) { - *dst++ = VAL; - --length; - } - RETURN; - } - -#ifndef BZERO - if ((c = (u_char)c0) != 0) { /* Fill the word. */ - c = (c << 8) | c; /* u_int is 16 bits. */ -#if UINT_MAX > 0xffff - c = (c << 16) | c; /* u_int is 32 bits. */ -#endif -#if UINT_MAX > 0xffffffff - c = (c << 32) | c; /* u_int is 64 bits. */ -#endif - } -#endif - /* Align destination by filling in bytes. */ - if ((t = (long)dst & wmask) != 0) { - t = wsize - t; - length -= t; - do { - *dst++ = VAL; - } while (--t != 0); - } - - /* Fill words. Length was >= 2*words so we know t >= 1 here. */ - t = length / wsize; - do { - *(u_int *)dst = WIDEVAL; - dst += wsize; - } while (--t != 0); - - /* Mop up trailing bytes, if any. */ - t = length & wmask; - if (t != 0) - do { - *dst++ = VAL; - } while (--t != 0); - RETURN; -} |