1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include "lint.h" 28 #include <sys/types.h> 29 #include <wchar.h> 30 #include <limits.h> 31 #include <string.h> 32 #include "libc.h" 33 34 wchar_t * 35 wmemmove(wchar_t *ws1, const wchar_t *ws2, size_t n) 36 { 37 wchar_t *ows1; 38 size_t max = SIZE_MAX / sizeof (wchar_t); 39 40 if (n <= max) { 41 return ((wchar_t *)memmove((void *)ws1, 42 (const void *)ws2, n * sizeof (wchar_t))); 43 } 44 45 ows1 = ws1; 46 if (n != 0) { 47 if (ws1 <= ws2) { 48 do { 49 *ws1++ = *ws2++; 50 } while (--n != 0); 51 } else { 52 ws2 += n; 53 ws1 += n; 54 do { 55 *--ws1 = *--ws2; 56 } while (--n != 0); 57 } 58 } 59 return (ows1); 60 } 61