1 /* Copyright (C) 1995, 1997, 2000, 2003, 2006, 2009-2021 Free Software 2 * Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16 17 /* Written by Jim Meyering <meyering@na-net.ornl.gov>. */ 18 19 #include <config.h> 20 21 #include <stddef.h> 22 23 /* Copy LEN bytes starting at SRCADDR to DESTADDR. Result undefined 24 if the source overlaps with the destination. 25 Return DESTADDR. */ 26 27 void * 28 memcpy (void *destaddr, void const *srcaddr, size_t len) /* */ 29 { 30 char *dest = destaddr; 31 char const *src = srcaddr; 32 33 while (len-- > 0) 34 *dest++ = *src++; 35 return destaddr; 36 }