root/maint/gnulib/lib/unistr/u-move.h

/* */

INCLUDED FROM

DEFINITIONS

1. FUNC

   1 /* Copy piece of UTF-8/UTF-16/UTF-32 string.
   2    Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2002.
   4 
   5    This file is free software.
   6    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
   7    You can redistribute it and/or modify it under either
   8      - the terms of the GNU Lesser General Public License as published
   9        by the Free Software Foundation; either version 3, or (at your
  10        option) any later version, or
  11      - the terms of the GNU General Public License as published by the
  12        Free Software Foundation; either version 2, or (at your option)
  13        any later version, or
  14      - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
  15 
  16    This file is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19    Lesser General Public License and the GNU General Public License
  20    for more details.
  21 
  22    You should have received a copy of the GNU Lesser General Public
  23    License and of the GNU General Public License along with this
  24    program.  If not, see <https://www.gnu.org/licenses/>.  */
  25 
  26 #include <string.h>
  27 
  28 UNIT *
  29 FUNC (UNIT *dest, const UNIT *src, size_t n)
     /*  */
  30 {
  31 #if 0
  32   if (dest < src)
  33     {
  34       UNIT *destptr = dest;
  35       const UNIT *srcptr = src;
  36 
  37       for (; n > 0; n--)
  38         *destptr++ = *srcptr++;
  39     }
  40   else if (dest > src)
  41     {
  42       UNIT *destptr = dest + n - 1;
  43       const UNIT *srcptr = src + n - 1;
  44 
  45       for (; n > 0; n--)
  46         *destptr-- = *srcptr--;
  47     }
  48 #else
  49   memmove ((char *) dest, (const char *) src, n * sizeof (UNIT));
  50 #endif
  51   return dest;
  52 }

/* */