diff options
Diffstat (limited to 'memcmp.c')
-rw-r--r-- | memcmp.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/memcmp.c b/memcmp.c new file mode 100644 index 0000000..0b1fbd2 --- /dev/null +++ b/memcmp.c @@ -0,0 +1,40 @@ +/* memcmp.c -- Replacement memcmp.c + * + * Useful on systems that don't have a working memcmp, such as SunOS + * 4.1.3 and NeXT x86 OpenStep. + * + * Copyright (C) 2002 - 2003 Matthias Andree <matthias.andree@gmx.de> + * + * 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 (see the file COPYING included with this + * distribution); if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <string.h> + +int +memcmp (const void *s1, const void *s2, size_t n) +{ + register unsigned const char *p1 = s1, *p2 = s2; + int d; + + if (n) + while (n-- > 0) + { + d = *p1++ - *p2++; + if (d != 0) + return d; + } + return 0; +} |