/****************************************************************************
 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

#include <curses.priv.h>

MODULE_ID("$Id: memmove.c,v 1.2 1999/02/27 19:55:57 tom Exp $")

/****************************************************************************
 *  Author: Thomas E. Dickey <dickey@clark.net> 1998                        *
 ****************************************************************************/

#if USE_MY_MEMMOVE
#define DST ((char *)s1)
#define SRC ((const char *)s2)
void * _nc_memmove(void * s1, const void * s2, size_t n)
{
	if (n != 0) {
		if ((DST+n > SRC) && (SRC+n > DST)) {
			static	char	*bfr;
			static	size_t	length;
			register size_t	j;
			if (length < n) {
				length = (n * 3) / 2;
				bfr = typeRealloc(char,length,bfr);
			}
			for (j = 0; j < n; j++)
				bfr[j] = SRC[j];
			SRC = bfr;
		}
		while (n-- != 0)
			DST[n] = SRC[n];
	}
	return s1;
}
#else
extern void _nc_memmove(void);	/* quiet's gcc warning */
void _nc_memmove(void) { } /* nonempty for strict ANSI compilers */
#endif /* USE_MY_MEMMOVE */