memcpy.c (1185B)
1 /* -*-comment-start: "//";comment-end:""-*- 2 * GNU Mes --- Maxwell Equations of Software 3 * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> 4 * 5 * This file is part of GNU Mes. 6 * 7 * GNU Mes is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 3 of the License, or (at 10 * your option) any later version. 11 * 12 * GNU Mes is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with GNU Mes. If not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #include <mes/lib.h> 22 #include <string.h> 23 24 char * 25 _memcpy (char *dest, char const *src, size_t n) 26 { 27 char *p = dest; 28 29 while (n != 0) 30 { 31 n = n - 1; 32 dest[0] = src[0]; 33 dest = dest + 1; 34 src = src + 1; 35 } 36 37 return p; 38 } 39 40 void * 41 memcpy (void *dest, void const *src, size_t n) 42 { 43 return _memcpy (dest, src, n); 44 }