zircon/kernel/lib/libc/string/strncat.c

// Copyright 2016 The Fuchsia Authors
// Copyright (c) 2008 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#include <string.h>
#include <sys/types.h>

char *strncat(char *dest, char const *src, size_t count) {
  char *tmp = dest;

  if (count > 0) {
    while (*dest)
      dest++;
    while ((*dest++ = *src++)) {
      if (--count == 0) {
        *dest = '\0';
        break;
      }
    }
  }

  return tmp;
}