mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
|
/* Copyright (C) 1991 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 of the
|
||
|
|
License, or (at your option) any later version.
|
||
|
|
|
||
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
||
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
||
|
|
Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
#include <ansidecl.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <memcopy.h>
|
||
|
|
|
||
|
|
/* Append SRC on the end of DEST. */
|
||
|
|
char *
|
||
|
|
DEFUN(strcat, (dest, src), char *dest AND CONST char *src)
|
||
|
|
{
|
||
|
|
register char *s1 = dest;
|
||
|
|
register CONST char *s2 = src;
|
||
|
|
reg_char c;
|
||
|
|
|
||
|
|
/* Find the end of the string. */
|
||
|
|
do
|
||
|
|
c = *s1++;
|
||
|
|
while (c != '\0');
|
||
|
|
|
||
|
|
/* Make S1 point before the next character, so we can increment
|
||
|
|
it while memory is read (wins on pipelined cpus). */
|
||
|
|
s1 -= 2;
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
c = *s2++;
|
||
|
|
*++s1 = c;
|
||
|
|
}
|
||
|
|
while (c != '\0');
|
||
|
|
|
||
|
|
return dest;
|
||
|
|
}
|