source: vendor/glibc-tests/glibc/wcsmbs/tst-wcsnlen.c

/* Copyright (C) 1999 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <stdio.h>
#include <wchar.h>

#define TEST(Str, Max, Exp) \
  n = wcsnlen (L##Str, Max);                                                  \
  if (n != Exp)                                                               \
    {                                                                         \
      result = 1;                                                             \
      printf ("wcsnlen (L\"%s\", %d) = %d, not %d\n", Str, Max, n, Exp);      \
    }

int
main (void)
{
  int result = 0;
  int n;

  TEST ("0123456789", 0, 0);
  TEST ("0123456789", 1, 1);
  TEST ("0123456789", 2, 2);
  TEST ("0123456789", 3, 3);
  TEST ("0123456789", 4, 4);
  TEST ("0123456789", 5, 5);
  TEST ("0123456789", 6, 6);
  TEST ("0123456789", 7, 7);
  TEST ("0123456789", 8, 8);
  TEST ("0123456789", 9, 9);

  TEST ("01234", 9, 5);

  return result;
}