wcsmbs/wmemset.c

   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 <wchar.h>
  19
  20 #ifdef WMEMSET
  21 # define __wmemset WMEMSET
  22 #endif
  23
  24 wchar_t *
  25 __wmemset (wchar_t *s, wchar_t c, size_t n)
  26 {
  27   wchar_t *wp = s;
  28
  29   while (n >= 4)
  30     {
  31       wp[0] = c;
  32       wp[1] = c;
  33       wp[2] = c;
  34       wp[3] = c;
  35       wp += 4;
  36       n -= 4;
  37     }
  38
  39   if (n > 0)
  40     {
  41       wp[0] = c;
  42
  43       if (n > 1)
  44         {
  45           wp[1] = c;
  46
  47           if (n > 2)
  48             wp[2] = c;
  49         }
  50     }
  51
  52   return s;
  53 }
  54 libc_hidden_def (__wmemset)
  55 weak_alias (__wmemset, wmemset)
  56 libc_hidden_weak (wmemset)