harbour-core/harbour/contrib/hbxdiff/3rd/libxdiff/xmissing.c

/*
 *  LibXDiff by Davide Libenzi ( File Differential Library )
 *  Copyright (C) 2003  Davide Libenzi
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Davide Libenzi <davidel@xmailserver.org>
 *
 */

#include "xinclude.h"



#if !defined(HAVE_MEMCHR)

void *memchr(void const *p, int c, long n) {
	char const *pc = p;

	for (; n; n--, pc++)
		if (*pc == (char) c)
			return pc;
	return NULL;
}

#endif /* #if !defined(HAVE_MEMCHR) */


#if !defined(HAVE_MEMCMP)

int memcmp(void const *p1, void const *p2, long n) {
	char const *pc1 = p1, *pc2 = p2;

	for (; n; n--, pc1++, pc2++)
		if (*pc1 != *pc2)
			return *pc1 - *pc2;
	return 0;
}

#endif /* #if !defined(HAVE_MEMCMP) */


#if !defined(HAVE_MEMCPY)

void *memcpy(void *d, void const *s, long n) {
	char *dc = d;
	char const *sc = s;

	for (; n; n--, dc++, sc++)
		*dc = *sc;
	return d;
}

#endif /* #if !defined(HAVE_MEMCPY) */


#if !defined(HAVE_MEMSET)

void *memset(void *d, int c, long n) {
	char *dc = d;

	for (; n; n--, dc++)
		*dc = (char) c;
	return d;
}

#endif /* #if !defined(HAVE_MEMSET) */


#if !defined(HAVE_STRLEN)

long strlen(char const *s) {
	char const *tmp;

	for (tmp = s; *s; s++);
	return (long) (s - tmp);
}

#endif /* #if !defined(HAVE_STRLEN) */