1 /* Copy piece of UTF-8/UTF-16/UTF-32 string. 2 Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2002. 4 5 This file is free software. 6 It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+". 7 You can redistribute it and/or modify it under either 8 - the terms of the GNU Lesser General Public License as published 9 by the Free Software Foundation; either version 3, or (at your 10 option) any later version, or 11 - the terms of the GNU General Public License as published by the 12 Free Software Foundation; either version 2, or (at your option) 13 any later version, or 14 - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+". 15 16 This file is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 Lesser General Public License and the GNU General Public License 20 for more details. 21 22 You should have received a copy of the GNU Lesser General Public 23 License and of the GNU General Public License along with this 24 program. If not, see <https://www.gnu.org/licenses/>. */ 25 26 #include <string.h> 27 28 UNIT * 29 FUNC (UNIT *dest, const UNIT *src, size_t n) /* */ 30 { 31 #if 0 32 if (dest < src) 33 { 34 UNIT *destptr = dest; 35 const UNIT *srcptr = src; 36 37 for (; n > 0; n--) 38 *destptr++ = *srcptr++; 39 } 40 else if (dest > src) 41 { 42 UNIT *destptr = dest + n - 1; 43 const UNIT *srcptr = src + n - 1; 44 45 for (; n > 0; n--) 46 *destptr-- = *srcptr--; 47 } 48 #else 49 memmove ((char *) dest, (const char *) src, n * sizeof (UNIT)); 50 #endif 51 return dest; 52 }