1/* Internal header for proving correct grouping in strings of numbers.
2 Copyright (C) 1995-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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/* Find the maximum prefix of the string between BEGIN and END which
20 satisfies the grouping rules. It is assumed that at least one digit
21 follows BEGIN directly. */
22extern const wchar_t *__correctly_grouped_prefixwc (const wchar_t *begin,
23 const wchar_t *end,
24 wchar_t thousands,
25 const char *grouping)
26 attribute_hidden;
27
28extern const char *__correctly_grouped_prefixmb (const char *begin,
29 const char *end,
30 const char *thousands,
31 const char *grouping)
32 attribute_hidden;
33

source code of glibc/stdlib/grouping.h