1  /* Copyright (C) 1996-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <string.h>
      19  #include <wchar.h>
      20  
      21  #undef mbsinit
      22  #undef __mbsinit
      23  
      24  /* In GNU libc the conversion functions only can convert between the
      25     fixed wide character representation and the multibyte
      26     representation of the same character set.  Since we use ISO 10646
      27     in UCS4 encoding for wide characters the best solution for
      28     multibyte characters is the UTF8 encoding.  I.e., the only state
      29     information is a counter of the processed bytes so far and the
      30     value collected so far.  Especially, we don't have different shift
      31     states.  */
      32  int
      33  __mbsinit (const mbstate_t *ps)
      34  {
      35    return ps == NULL || ps->__count == 0;
      36  }
      37  weak_alias (__mbsinit, mbsinit)