Annotation of sys/lib/libsa/memcpy.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: memcpy.c,v 1.5 2003/08/08 03:36:07 deraadt Exp $ */
! 2: /* $NetBSD: bcopy.c,v 1.5 1995/04/22 13:46:50 cgd Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * @(#)bcopy.c 8.1 (Berkeley) 6/11/93
! 33: */
! 34:
! 35: #include <sys/types.h>
! 36: #include "stand.h"
! 37:
! 38: /*
! 39: * This is designed to be small, not fast.
! 40: */
! 41: void *
! 42: memcpy(void *s1, const void *s2, size_t n)
! 43: {
! 44: const char *f = s2;
! 45: char *t = s1;
! 46:
! 47: if (f < t) {
! 48: f += n;
! 49: t += n;
! 50: while (n-- > 0)
! 51: *--t = *--f;
! 52: } else
! 53: while (n-- > 0)
! 54: *t++ = *f++;
! 55: return s1;
! 56: }
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