pmt: revert 7f8090b

include/libgnulib/astrxfrm.h

@@ -1,48 +0,0 @@
-/* Locale dependent string transformation for comparison.
-   Copyright (C) 2010-2024 Free Software Foundation, Inc.
-
-   This program 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 program 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/>.  */
-
-#ifndef ASTRXFRM_H
-#define ASTRXFRM_H
-
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/* Variant of strxfrm() with a calling convention that reduces the number
-   of strxfrm calls.  */
-
-/* Transform the string starting at S to a string, in such a way that
-   comparing S1 and S2 with strcoll() is equivalent to comparing astrxfrm(S1)
-   and astrxfrm(S2) with strcmp().
-   The result of this function depends on the LC_COLLATE category of the
-   current locale.
-   If successful: If resultbuf is not NULL and the result fits into *lengthp
-   bytes, it is put in resultbuf, and resultbuf is returned.  Otherwise, a
-   freshly allocated string is returned.  In both cases, *lengthp is set to the
-   length of the returned string.
-   Upon failure, return NULL, with errno set.  */
-extern char * astrxfrm (const char *s,
-                        char *restrict resultbuf, size_t *lengthp);
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ASTRXFRM_H */