1 /*

     2  * memset.c - replacement for memset(3), using duff's device.

     3  * Copyright (C) 1995 - 2004 Michael Riepe

     4  * 

     5  * This library is free software; you can redistribute it and/or

     6  * modify it under the terms of the GNU Library General Public

     7  * License as published by the Free Software Foundation; either

     8  * version 2 of the License, or (at your option) any later version.

     9  * 

    10  * This library is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13  * Library General Public License for more details.

    14  * 

    15  * You should have received a copy of the GNU Library General Public

    16  * License along with this library; if not, write to the Free Software

    17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    18  */

    19 

    20 #if HAVE_CONFIG_H

    21 # include <config.h>

    22 #endif /* HAVE_CONFIG_H */

    23 

    24 #ifndef lint

    25 static const char rcsid[] = "@(#) $Id: memset.c,v 1.10 2005/05/21 15:39:24 michael Exp $";

    26 #endif /* lint */

    27 

    28 #include <stddef.h>	/* for size_t */

    29 #include <sys/types.h>

    30 

    31 void*

    32 _elf_memset(void *s, int c, size_t n) {

    33     char *t = (char*)s;

    34 

    35     if (n) {

    36 	switch (n % 8u) {

    37 	    do {

    38 		n -= 8;

    39 		default:

    40 		case 0: *t++ = (char)c;

    41 		case 7: *t++ = (char)c;

    42 		case 6: *t++ = (char)c;

    43 		case 5: *t++ = (char)c;

    44 		case 4: *t++ = (char)c;

    45 		case 3: *t++ = (char)c;

    46 		case 2: *t++ = (char)c;

    47 		case 1: *t++ = (char)c;

    48 	    }

    49 	    while (n > 8);

    50 	}

    51     }

    52     return s;

    53 }