memset.c
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上传日期:2022-05-23
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- /* Copyright (C) 2000 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /* File : memset.c
- Author : Richard A. O'Keefe.
- Updated: 25 May 1984
- Defines: memset()
- memset(dst, chr, len)
- fills the memory area dst[0..len-1] with len bytes all equal to chr.
- The result is dst. See also bfill(), which has no return value and
- puts the last two arguments the other way around.
- Note: the VAX assembly code version can only handle 0 <= len < 2^16.
- It is presented for your interest and amusement.
- */
- #include "strings.h"
- #if VaxAsm
- char *memset(char *dst,int chr, int len)
- {
- asm("movc5 $0,*4(ap),8(ap),12(ap),*4(ap)");
- return dst;
- }
- #else ~VaxAsm
- char *memset(char *dst, register pchar chr, register int len)
- {
- register char *d;
- for (d = dst; --len >= 0; *d++ = chr) ;
- return dst;
- }
- #endif VaxAsm