pmt: initial 3.0.2 update

include/libgnulib/wmemmove-impl.h

@@ -0,0 +1,36 @@
+/* Copy wide character array.
+   Copyright (C) 1999, 2011-2024 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 1999.
+
+   This file 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 3 of the
+   License, or (at your option) any later version.
+
+   This file 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+wchar_t *
+wmemmove (wchar_t *dest, const wchar_t *src, size_t n)
+{
+  if (dest < src)
+    {
+      wchar_t *destptr = dest;
+      const wchar_t *srcptr = src;
+      for (; n > 0; n--)
+        *destptr++ = *srcptr++;
+    }
+  else if (dest > src)
+    {
+      wchar_t *destptr = dest + n - 1;
+      const wchar_t *srcptr = src + n - 1;
+      for (; n > 0; n--)
+        *destptr-- = *srcptr--;
+    }
+  return dest;
+}