jehanne/sys/src/lib/jehanne/port/strncat.c

29 lines
638 B
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include <u.h>
#include <libc.h>
char*
jehanne_strncat(char *s1, const char *s2, int32_t n)
{
char *os1;
os1 = s1;
while(*s1++)
;
s1--;
while(*s1++ = *s2++)
if(--n < 0) {
s1[-1] = 0;
break;
}
return os1;
}