/* Copyright (C) 1995-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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/*

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* ISO C99 Standard: 7.24

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* Extended multibyte and wide character utilities <wchar.h>

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*/

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#ifndef _WCHAR_H

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#define _WCHAR_H 1

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#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION

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#include <bits/libc-header-start.h>

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/* Gather machine dependent type support. */

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#include <bits/floatn.h>

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#define __need_size_t

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#define __need_wchar_t

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#define __need_NULL

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#include <stddef.h>

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#define __need___va_list

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#include <stdarg.h>

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#include <bits/wchar.h>

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#include <bits/types/wint_t.h>

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#include <bits/types/mbstate_t.h>

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#include <bits/types/__FILE.h>

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#if defined __USE_UNIX98 || defined __USE_XOPEN2K

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# include <bits/types/FILE.h>

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#endif

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#ifdef __USE_XOPEN2K8

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# include <bits/types/locale_t.h>

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#endif

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/* Tell the caller that we provide correct C++ prototypes. */

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#if defined __cplusplus && __GNUC_PREREQ (4, 4)

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# define __CORRECT_ISO_CPP_WCHAR_H_PROTO

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#endif

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#ifndef WCHAR_MIN

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/* These constants might also be defined in <inttypes.h>. */

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# define WCHAR_MIN __WCHAR_MIN

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# define WCHAR_MAX __WCHAR_MAX

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#endif

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#ifndef WEOF

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# define WEOF (0xffffffffu)

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#endif

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/* All versions of XPG prior to the publication of ISO C99 required

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the bulk of <wctype.h>'s declarations to appear in this header

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(because <wctype.h> did not exist prior to C99). In POSIX.1-2001

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those declarations were marked as XSI extensions; in -2008 they

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were additionally marked as obsolescent. _GNU_SOURCE mode

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anticipates the removal of these declarations in the next revision

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of POSIX. */

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#if (defined __USE_XOPEN && !defined __USE_GNU \

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&& !(defined __USE_XOPEN2K && !defined __USE_XOPEN2KXSI))

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# include <bits/wctype-wchar.h>

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#endif

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__BEGIN_DECLS

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/* This incomplete type is defined in <time.h> but needed here because

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of `wcsftime'. */

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struct tm;

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/* Copy SRC to DEST. */

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extern wchar_t *wcscpy (wchar_t *__restrict __dest,

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const wchar_t *__restrict __src)

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__THROW __nonnull ((1, 2));

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/* Copy no more than N wide-characters of SRC to DEST. */

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extern wchar_t *wcsncpy (wchar_t *__restrict __dest,

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const wchar_t *__restrict __src, size_t __n)

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__THROW __nonnull ((1, 2));

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/* Append SRC onto DEST. */

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extern wchar_t *wcscat (wchar_t *__restrict __dest,

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const wchar_t *__restrict __src)

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__THROW __nonnull ((1, 2));

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/* Append no more than N wide-characters of SRC onto DEST. */

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extern wchar_t *wcsncat (wchar_t *__restrict __dest,

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const wchar_t *__restrict __src, size_t __n)

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__THROW __nonnull ((1, 2));

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/* Compare S1 and S2. */

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extern int wcscmp (const wchar_t *__s1, const wchar_t *__s2)

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__THROW __attribute_pure__ __nonnull ((1, 2));

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/* Compare N wide-characters of S1 and S2. */

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extern int wcsncmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)

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__THROW __attribute_pure__ __nonnull ((1, 2));

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#ifdef __USE_XOPEN2K8

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/* Compare S1 and S2, ignoring case. */

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extern int wcscasecmp (const wchar_t *__s1, const wchar_t *__s2) __THROW;

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/* Compare no more than N chars of S1 and S2, ignoring case. */

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extern int wcsncasecmp (const wchar_t *__s1, const wchar_t *__s2,

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size_t __n) __THROW;

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/* Similar to the two functions above but take the information from

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the provided locale and not the global locale. */

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extern int wcscasecmp_l (const wchar_t *__s1, const wchar_t *__s2,

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locale_t __loc) __THROW;

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extern int wcsncasecmp_l (const wchar_t *__s1, const wchar_t *__s2,

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size_t __n, locale_t __loc) __THROW;

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#endif

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/* Compare S1 and S2, both interpreted as appropriate to the

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LC_COLLATE category of the current locale. */

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extern int wcscoll (const wchar_t *__s1, const wchar_t *__s2) __THROW;

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/* Transform S2 into array pointed to by S1 such that if wcscmp is

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applied to two transformed strings the result is the as applying

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`wcscoll' to the original strings. */

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extern size_t wcsxfrm (wchar_t *__restrict __s1,

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const wchar_t *__restrict __s2, size_t __n) __THROW;

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#ifdef __USE_XOPEN2K8

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/* Similar to the two functions above but take the information from

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the provided locale and not the global locale. */

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/* Compare S1 and S2, both interpreted as appropriate to the

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LC_COLLATE category of the given locale. */

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extern int wcscoll_l (const wchar_t *__s1, const wchar_t *__s2,

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locale_t __loc) __THROW;

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/* Transform S2 into array pointed to by S1 such that if wcscmp is

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applied to two transformed strings the result is the as applying

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`wcscoll' to the original strings. */

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extern size_t wcsxfrm_l (wchar_t *__s1, const wchar_t *__s2,

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size_t __n, locale_t __loc) __THROW;

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/* Duplicate S, returning an identical malloc'd string. */

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extern wchar_t *wcsdup (const wchar_t *__s) __THROW __attribute_malloc__;

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#endif

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/* Find the first occurrence of WC in WCS. */

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#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO

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extern "C++" wchar_t *wcschr (wchar_t *__wcs, wchar_t __wc)

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__THROW __asm ("wcschr") __attribute_pure__;

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extern "C++" const wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)

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__THROW __asm ("wcschr") __attribute_pure__;

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#else

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extern wchar_t *wcschr (const wchar_t *__wcs, wchar_t __wc)

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__THROW __attribute_pure__;

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#endif

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/* Find the last occurrence of WC in WCS. */

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#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO

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extern "C++" wchar_t *wcsrchr (wchar_t *__wcs, wchar_t __wc)

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__THROW __asm ("wcsrchr") __attribute_pure__;

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extern "C++" const wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)

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__THROW __asm ("wcsrchr") __attribute_pure__;

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#else

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extern wchar_t *wcsrchr (const wchar_t *__wcs, wchar_t __wc)

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__THROW __attribute_pure__;

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#endif

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#ifdef __USE_GNU

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/* This function is similar to `wcschr'. But it returns a pointer to

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the closing NUL wide character in case C is not found in S. */

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extern wchar_t *wcschrnul (const wchar_t *__s, wchar_t __wc)

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__THROW __attribute_pure__;

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#endif

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/* Return the length of the initial segmet of WCS which

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consists entirely of wide characters not in REJECT. */

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extern size_t wcscspn (const wchar_t *__wcs, const wchar_t *__reject)

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__THROW __attribute_pure__;

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/* Return the length of the initial segmet of WCS which

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consists entirely of wide characters in ACCEPT. */

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extern size_t wcsspn (const wchar_t *__wcs, const wchar_t *__accept)

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__THROW __attribute_pure__;

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/* Find the first occurrence in WCS of any character in ACCEPT. */

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#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO

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extern "C++" wchar_t *wcspbrk (wchar_t *__wcs, const wchar_t *__accept)

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__THROW __asm ("wcspbrk") __attribute_pure__;

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extern "C++" const wchar_t *wcspbrk (const wchar_t *__wcs,

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const wchar_t *__accept)

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__THROW __asm ("wcspbrk") __attribute_pure__;

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#else

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extern wchar_t *wcspbrk (const wchar_t *__wcs, const wchar_t *__accept)

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__THROW __attribute_pure__;

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#endif

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/* Find the first occurrence of NEEDLE in HAYSTACK. */

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#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO

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extern "C++" wchar_t *wcsstr (wchar_t *__haystack, const wchar_t *__needle)

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__THROW __asm ("wcsstr") __attribute_pure__;

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extern "C++" const wchar_t *wcsstr (const wchar_t *__haystack,

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const wchar_t *__needle)

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__THROW __asm ("wcsstr") __attribute_pure__;

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#else

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extern wchar_t *wcsstr (const wchar_t *__haystack, const wchar_t *__needle)

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__THROW __attribute_pure__;

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#endif

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/* Divide WCS into tokens separated by characters in DELIM. */

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extern wchar_t *wcstok (wchar_t *__restrict __s,

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const wchar_t *__restrict __delim,

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wchar_t **__restrict __ptr) __THROW;

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/* Return the number of wide characters in S. */

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extern size_t wcslen (const wchar_t *__s) __THROW __attribute_pure__;

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#ifdef __USE_XOPEN

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/* Another name for `wcsstr' from XPG4. */

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# ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO

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extern "C++" wchar_t *wcswcs (wchar_t *__haystack, const wchar_t *__needle)

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__THROW __asm ("wcswcs") __attribute_pure__;

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extern "C++" const wchar_t *wcswcs (const wchar_t *__haystack,

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const wchar_t *__needle)

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__THROW __asm ("wcswcs") __attribute_pure__;

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# else

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extern wchar_t *wcswcs (const wchar_t *__haystack, const wchar_t *__needle)

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__THROW __attribute_pure__;

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# endif

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#endif

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#ifdef __USE_XOPEN2K8

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/* Return the number of wide characters in S, but at most MAXLEN. */

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extern size_t wcsnlen (const wchar_t *__s, size_t __maxlen)

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__THROW __attribute_pure__;

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#endif

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/* Search N wide characters of S for C. */

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#ifdef __CORRECT_ISO_CPP_WCHAR_H_PROTO

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extern "C++" wchar_t *wmemchr (wchar_t *__s, wchar_t __c, size_t __n)

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__THROW __asm ("wmemchr") __attribute_pure__;

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extern "C++" const wchar_t *wmemchr (const wchar_t *__s, wchar_t __c,

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size_t __n)

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__THROW __asm ("wmemchr") __attribute_pure__;

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#else

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extern wchar_t *wmemchr (const wchar_t *__s, wchar_t __c, size_t __n)

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__THROW __attribute_pure__;

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#endif

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/* Compare N wide characters of S1 and S2. */

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extern int wmemcmp (const wchar_t *__s1, const wchar_t *__s2, size_t __n)

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__THROW __attribute_pure__;

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/* Copy N wide characters of SRC to DEST. */

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extern wchar_t *wmemcpy (wchar_t *__restrict __s1,

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const wchar_t *__restrict __s2, size_t __n) __THROW;

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/* Copy N wide characters of SRC to DEST, guaranteeing

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correct behavior for overlapping strings. */

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extern wchar_t *wmemmove (wchar_t *__s1, const wchar_t *__s2, size_t __n)

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__THROW;

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/* Set N wide characters of S to C. */

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extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;

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#ifdef __USE_GNU

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/* Copy N wide characters of SRC to DEST and return pointer to following

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wide character. */

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extern wchar_t *wmempcpy (wchar_t *__restrict __s1,

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const wchar_t *__restrict __s2, size_t __n)

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__THROW;

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#endif

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/* Determine whether C constitutes a valid (one-byte) multibyte

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character. */

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extern wint_t btowc (int __c) __THROW;

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/* Determine whether C corresponds to a member of the extended

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character set whose multibyte representation is a single byte. */

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extern int wctob (wint_t __c) __THROW;

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/* Determine whether PS points to an object representing the initial

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state. */

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extern int mbsinit (const mbstate_t *__ps) __THROW __attribute_pure__;

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/* Write wide character representation of multibyte character pointed

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to by S to PWC. */

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extern size_t mbrtowc (wchar_t *__restrict __pwc,

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const char *__restrict __s, size_t __n,

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mbstate_t *__restrict __p) __THROW;

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/* Write multibyte representation of wide character WC to S. */

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extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,

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mbstate_t *__restrict __ps) __THROW;

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/* Return number of bytes in multibyte character pointed to by S. */

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extern size_t __mbrlen (const char *__restrict __s, size_t __n,

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mbstate_t *__restrict __ps) __THROW;

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extern size_t mbrlen (const char *__restrict __s, size_t __n,

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mbstate_t *__restrict __ps) __THROW;

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#ifdef __USE_EXTERN_INLINES

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/* Define inline function as optimization. */

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/* We can use the BTOWC and WCTOB optimizations since we know that all

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locales must use ASCII encoding for the values in the ASCII range

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and because the wchar_t encoding is always ISO 10646. */

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extern wint_t __btowc_alias (int __c) __asm ("btowc");

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__extern_inline wint_t

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__NTH (btowc (int __c))

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{ return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'

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? (wint_t) __c : __btowc_alias (__c)); }

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extern int __wctob_alias (wint_t __c) __asm ("wctob");

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__extern_inline int

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__NTH (wctob (wint_t __wc))

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{ return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f'

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? (int) __wc : __wctob_alias (__wc)); }

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__extern_inline size_t

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__NTH (mbrlen (const char *__restrict __s, size_t __n,

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mbstate_t *__restrict __ps))

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{ return (__ps != NULL

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? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }

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#endif

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/* Write wide character representation of multibyte character string

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SRC to DST. */

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extern size_t mbsrtowcs (wchar_t *__restrict __dst,

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const char **__restrict __src, size_t __len,

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mbstate_t *__restrict __ps) __THROW;

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/* Write multibyte character representation of wide character string

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SRC to DST. */

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extern size_t wcsrtombs (char *__restrict __dst,

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const wchar_t **__restrict __src, size_t __len,

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mbstate_t *__restrict __ps) __THROW;

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#ifdef __USE_XOPEN2K8

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/* Write wide character representation of at most NMC bytes of the

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multibyte character string SRC to DST. */

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extern size_t mbsnrtowcs (wchar_t *__restrict __dst,

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const char **__restrict __src, size_t __nmc,

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size_t __len, mbstate_t *__restrict __ps) __THROW;

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/* Write multibyte character representation of at most NWC characters

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from the wide character string SRC to DST. */

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extern size_t wcsnrtombs (char *__restrict __dst,

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const wchar_t **__restrict __src,

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size_t __nwc, size_t __len,

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mbstate_t *__restrict __ps) __THROW;

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#endif /* use POSIX 2008 */

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/* The following functions are extensions found in X/Open CAE. */

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#ifdef __USE_XOPEN

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/* Determine number of column positions required for C. */

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extern int wcwidth (wchar_t __c) __THROW;

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/* Determine number of column positions required for first N wide

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characters (or fewer if S ends before this) in S. */

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extern int wcswidth (const wchar_t *__s, size_t __n) __THROW;

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#endif /* Use X/Open. */

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/* Convert initial portion of the wide string NPTR to `double'

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representation. */

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extern double wcstod (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#ifdef __USE_ISOC99

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/* Likewise for `float' and `long double' sizes of floating-point numbers. */

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extern float wcstof (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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extern long double wcstold (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif /* C99 */

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/* Likewise for `_FloatN' and `_FloatNx' when support is enabled. */

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#if __HAVE_FLOAT16 && defined __USE_GNU

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extern _Float16 wcstof16 (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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#if __HAVE_FLOAT32 && defined __USE_GNU

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extern _Float32 wcstof32 (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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#if __HAVE_FLOAT64 && defined __USE_GNU

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extern _Float64 wcstof64 (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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#if __HAVE_FLOAT128 && defined __USE_GNU

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extern _Float128 wcstof128 (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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#if __HAVE_FLOAT32X && defined __USE_GNU

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extern _Float32x wcstof32x (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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#if __HAVE_FLOAT64X && defined __USE_GNU

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extern _Float64x wcstof64x (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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#if __HAVE_FLOAT128X && defined __USE_GNU

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extern _Float128x wcstof128x (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr) __THROW;

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#endif

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/* Convert initial portion of wide string NPTR to `long int'

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representation. */

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extern long int wcstol (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, int __base) __THROW;

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/* Convert initial portion of wide string NPTR to `unsigned long int'

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representation. */

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extern unsigned long int wcstoul (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, int __base)

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__THROW;

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#ifdef __USE_ISOC99

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/* Convert initial portion of wide string NPTR to `long long int'

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representation. */

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__extension__

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extern long long int wcstoll (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, int __base)

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__THROW;

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/* Convert initial portion of wide string NPTR to `unsigned long long int'

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representation. */

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__extension__

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extern unsigned long long int wcstoull (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr,

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int __base) __THROW;

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#endif /* ISO C99. */

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#ifdef __USE_GNU

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/* Convert initial portion of wide string NPTR to `long long int'

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representation. */

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__extension__

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extern long long int wcstoq (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, int __base)

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__THROW;

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/* Convert initial portion of wide string NPTR to `unsigned long long int'

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representation. */

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__extension__

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extern unsigned long long int wcstouq (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr,

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int __base) __THROW;

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#endif /* Use GNU. */

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#ifdef __USE_GNU

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/* Parallel versions of the functions above which take the locale to

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use as an additional parameter. These are GNU extensions inspired

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by the POSIX.1-2008 extended locale API. */

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extern long int wcstol_l (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, int __base,

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locale_t __loc) __THROW;

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extern unsigned long int wcstoul_l (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr,

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int __base, locale_t __loc) __THROW;

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__extension__

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extern long long int wcstoll_l (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr,

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int __base, locale_t __loc) __THROW;

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__extension__

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extern unsigned long long int wcstoull_l (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr,

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int __base, locale_t __loc)

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__THROW;

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extern double wcstod_l (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, locale_t __loc)

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__THROW;

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extern float wcstof_l (const wchar_t *__restrict __nptr,

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wchar_t **__restrict __endptr, locale_t __loc)

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__THROW;

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extern long double wcstold_l (const wchar_t *__restrict __nptr,

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