Files
jsix_import/src/libraries/libc/string/strncat.cpp
Justin C. Miller 346c172b32 [libc] Add new libc
This new libc is mostly from scratch, with *printf() functions provided
by Marco Paland and Eyal Rozenberg's tiny printf library, and malloc and
friends provided by dlmalloc.
2022-02-06 21:39:04 -08:00

28 lines
655 B
C++

/** \file strncat.cpp
*
* This file is part of the C standard library for the jsix operating
* system.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
#include <string.h>
#include <stddef.h>
#include <__j6libc/copy.h>
char *strncat(char * restrict s1, const char * restrict s2, size_t n) {
if (!s1 || !s2 || !n)
return s1;
char *dest = s1;
char const *src = s2;
while (*dest++);
while (*src && n--) *dest++ = *src++;
*dest = 0;
return s1;
}