wcsmbs/wmemset.c

   1 /* Copyright (C) 1996-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.org>, 1996.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <wchar.h>
  20
  21 #ifdef WMEMSET
  22 # define __wmemset WMEMSET
  23 #endif
  24
  25 wchar_t *
  26 __wmemset (wchar_t *s, wchar_t c, size_t n)
  27 {
  28   wchar_t *wp = s;
  29
  30   while (n >= 4)
  31     {
  32       wp[0] = c;
  33       wp[1] = c;
  34       wp[2] = c;
  35       wp[3] = c;
  36       wp += 4;
  37       n -= 4;
  38     }
  39
  40   if (n > 0)
  41     {
  42       wp[0] = c;
  43
  44       if (n > 1)
  45         {
  46           wp[1] = c;
  47
  48           if (n > 2)
  49             wp[2] = c;
  50         }
  51     }
  52
  53   return s;
  54 }
  55 libc_hidden_def (__wmemset)
  56 weak_alias (__wmemset, wmemset)
  57 libc_hidden_weak (wmemset)