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/* Copyright (C) 1995-2002, 2003 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library 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 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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 the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

/*

 *      ISO C99 Standard: 7.24

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

 */

#ifndef _WCHAR_H

#ifndef __need_mbstate_t

# define _WCHAR_H 1

# include <features.h>

#endif

#ifndef __UCLIBC_HAS_WCHAR__

#error Attempted to include wchar.h when uClibc built without wide char support.

#endif

#ifdef _WCHAR_H

/* Get FILE definition.  */

# define __need___FILE

# ifdef __USE_UNIX98

#  define __need_FILE

# endif

# include <stdio.h>

/* Get va_list definition.  */

# define __need___va_list

# include <stdarg.h>

/* Get size_t, wchar_t, wint_t and NULL from <stddef.h>.  */

# define __need_size_t

# define __need_wchar_t

# define __need_NULL

#endif

#define __need_wint_t

#include <stddef.h>

#include <bits/wchar.h>

/* We try to get wint_t from <stddef.h>, but not all GCC versions define it

   there.  So define it ourselves if it remains undefined.  */

#ifndef _WINT_T

/* Integral type unchanged by default argument promotions that can

   hold any value corresponding to members of the extended character

   set, as well as at least one value that does not correspond to any

   member of the extended character set.  */

# define _WINT_T

typedef unsigned int wint_t;

#else

/* Work around problems with the <stddef.h> file which doesn't put

   wint_t in the std namespace.  */

# if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \

     && defined __WINT_TYPE__

__BEGIN_NAMESPACE_STD

typedef __WINT_TYPE__ wint_t;

__END_NAMESPACE_STD

# endif

#endif

#ifndef __mbstate_t_defined

# define __mbstate_t_defined    1

/* Conversion state information.  */

#if 1

typedef struct

{

        wchar_t mask;

        wchar_t wc;

} __mbstate_t;

#else

typedef struct

{

  int __count;

  union

  {

    wint_t __wch;

    char __wchb[4];

  } __value;            /* Value so far.  */

} __mbstate_t;

#endif

#endif

#undef __need_mbstate_t

/* The rest of the file is only used if used if __need_mbstate_t is not

   defined.  */

#ifdef _WCHAR_H

__BEGIN_NAMESPACE_C99

/* Public type.  */

typedef __mbstate_t mbstate_t;

__END_NAMESPACE_C99

#ifdef __USE_GNU

__USING_NAMESPACE_C99(mbstate_t)

#endif

#ifndef WCHAR_MIN

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

# define WCHAR_MIN __WCHAR_MIN

# define WCHAR_MAX __WCHAR_MAX

#endif

#ifndef WEOF

# define WEOF (0xffffffffu)

#endif

/* For XPG4 compliance we have to define the stuff from <wctype.h> here

   as well.  */

#if defined __USE_XOPEN && !defined __USE_UNIX98

# include <wctype.h>

#endif

__BEGIN_DECLS

__BEGIN_NAMESPACE_STD

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

   of `wcsftime'.  */

struct tm;

/* XXX We have to clean this up at some point.  Since tm is in the std

   namespace but wcsftime is in __c99 the type wouldn't be found

   without inserting it in the global namespace.  */

__USING_NAMESPACE_STD(tm)

__END_NAMESPACE_STD

__BEGIN_NAMESPACE_C99

/* Copy SRC to DEST.  */

extern wchar_t *wcscpy (wchar_t *__restrict __dest,

                        __const wchar_t *__restrict __src) __THROW;

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

extern wchar_t *wcsncpy (wchar_t *__restrict __dest,

                         __const wchar_t *__restrict __src, size_t __n)

     __THROW;

/* Append SRC onto DEST.  */

extern wchar_t *wcscat (wchar_t *__restrict __dest,

                        __const wchar_t *__restrict __src) __THROW;

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

extern wchar_t *wcsncat (wchar_t *__restrict __dest,

                         __const wchar_t *__restrict __src, size_t __n)

     __THROW;

/* Compare S1 and S2.  */

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

     __THROW __attribute_pure__;

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

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

     __THROW __attribute_pure__;

__END_NAMESPACE_C99

#ifdef __USE_GNU

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

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

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

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

                        size_t __n) __THROW;

#ifdef __UCLIBC_HAS_XLOCALE__

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

   the provided locale and not the global locale.  */

# include <xlocale.h>

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

                         __locale_t __loc) __THROW;

extern int __wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,

                         __locale_t __loc) __THROW;

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

                          size_t __n, __locale_t __loc) __THROW;

extern int __wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,

                          size_t __n, __locale_t __loc) __THROW;

#endif /* __UCLIBC_HAS_XLOCALE__ */

#endif

__BEGIN_NAMESPACE_C99

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

   LC_COLLATE category of the current locale.  */

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

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

   applied to two transformed strings the result is the as applying

   `wcscoll' to the original strings.  */

extern size_t wcsxfrm (wchar_t *__restrict __s1,

                       __const wchar_t *__restrict __s2, size_t __n) __THROW;

__END_NAMESPACE_C99

#ifdef __USE_GNU

#ifdef __UCLIBC_HAS_XLOCALE__

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

   the provided locale and not the global locale.  */

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

   LC_COLLATE category of the given locale.  */

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

                      __locale_t __loc) __THROW;

extern int __wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,

                      __locale_t __loc) __THROW;

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

   applied to two transformed strings the result is the as applying

   `wcscoll' to the original strings.  */

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

                         size_t __n, __locale_t __loc) __THROW;

extern size_t __wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,

                         size_t __n, __locale_t __loc) __THROW;

#endif /* __UCLIBC_HAS_XLOCALE__ */

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

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

#endif

__BEGIN_NAMESPACE_C99

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

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

     __THROW __attribute_pure__;

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

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

     __THROW __attribute_pure__;

__END_NAMESPACE_C99

#ifdef __USE_GNU

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

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

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

     __THROW __attribute_pure__;

#endif

__BEGIN_NAMESPACE_C99

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

   consists entirely of wide characters not in REJECT.  */

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

     __THROW __attribute_pure__;

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

   consists entirely of wide characters in  ACCEPT.  */

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

     __THROW __attribute_pure__;

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

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

     __THROW __attribute_pure__;

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

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

     __THROW __attribute_pure__;

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

extern wchar_t *wcstok (wchar_t *__restrict __s,

                        __const wchar_t *__restrict __delim,

                        wchar_t **__restrict __ptr) __THROW;

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

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

__END_NAMESPACE_C99

#ifdef __USE_XOPEN

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

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

     __THROW __attribute_pure__;

#endif

#ifdef __USE_GNU

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

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

     __THROW __attribute_pure__;

#endif

__BEGIN_NAMESPACE_C99

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

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

     __THROW __attribute_pure__;

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

extern int wmemcmp (__const wchar_t *__restrict __s1,

                    __const wchar_t *__restrict __s2, size_t __n)

     __THROW __attribute_pure__;

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

extern wchar_t *wmemcpy (wchar_t *__restrict __s1,

                         __const wchar_t *__restrict __s2, size_t __n) __THROW;

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

   correct behavior for overlapping strings.  */

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

     __THROW;

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

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

__END_NAMESPACE_C99

#ifdef __USE_GNU

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

   wide character.  */

extern wchar_t *wmempcpy (wchar_t *__restrict __s1,

                          __const wchar_t *__restrict __s2, size_t __n)

     __THROW;

#endif

__BEGIN_NAMESPACE_C99

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

   character.  */

extern wint_t btowc (int __c) __THROW;

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

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

extern int wctob (wint_t __c) __THROW;

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

   state.  */

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

/* Write wide character representation of multibyte character pointed

   to by S to PWC.  */

extern size_t mbrtowc (wchar_t *__restrict __pwc,

                       __const char *__restrict __s, size_t __n,

                       mbstate_t *__p) __THROW;

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

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

                       mbstate_t *__restrict __ps) __THROW;

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

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

                        mbstate_t *__restrict __ps) __THROW;

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

                      mbstate_t *__restrict __ps) __THROW;

__END_NAMESPACE_C99

#ifdef __USE_EXTERN_INLINES

/* Define inline function as optimization.  */

extern __inline size_t mbrlen (__const char *__restrict __s, size_t __n,

                               mbstate_t *__restrict __ps) __THROW

{ return (__ps != NULL

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

#endif

__BEGIN_NAMESPACE_C99

/* Write wide character representation of multibyte character string

   SRC to DST.  */

extern size_t mbsrtowcs (wchar_t *__restrict __dst,

                         __const char **__restrict __src, size_t __len,

                         mbstate_t *__restrict __ps) __THROW;

/* Write multibyte character representation of wide character string

   SRC to DST.  */

extern size_t wcsrtombs (char *__restrict __dst,

                         __const wchar_t **__restrict __src, size_t __len,

                         mbstate_t *__restrict __ps) __THROW;

__END_NAMESPACE_C99

#ifdef  __USE_GNU

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

   multibyte character string SRC to DST.  */

extern size_t mbsnrtowcs (wchar_t *__restrict __dst,

                          __const char **__restrict __src, size_t __nmc,

                          size_t __len, mbstate_t *__restrict __ps) __THROW;

/* Write multibyte character representation of at most NWC characters

   from the wide character string SRC to DST.  */

extern size_t wcsnrtombs (char *__restrict __dst,

                          __const wchar_t **__restrict __src,

                          size_t __nwc, size_t __len,

                          mbstate_t *__restrict __ps) __THROW;

#endif  /* use GNU */

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

#ifdef __USE_XOPEN

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

extern int wcwidth (wchar_t __c) __THROW;

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

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

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

#endif  /* Use X/Open.  */

__BEGIN_NAMESPACE_C99

#ifdef __UCLIBC_HAS_FLOATS__

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

   representation.  */

extern double wcstod (__const wchar_t *__restrict __nptr,

                      wchar_t **__restrict __endptr) __THROW;

#ifdef __USE_ISOC99

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

extern float wcstof (__const wchar_t *__restrict __nptr,

                     wchar_t **__restrict __endptr) __THROW;

extern long double wcstold (__const wchar_t *__restrict __nptr,

                            wchar_t **__restrict __endptr) __THROW;

#endif /* C99 */

#endif /* __UCLIBC_HAS_FLOATS__ */

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

   representation.  */

extern long int wcstol (__const wchar_t *__restrict __nptr,

                        wchar_t **__restrict __endptr, int __base) __THROW;

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

   representation.  */

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

                                  wchar_t **__restrict __endptr, int __base)

     __THROW;

#if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)

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

   representation.  */

__extension__

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

                              wchar_t **__restrict __endptr, int __base)

     __THROW;

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

   representation.  */

__extension__

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

                                        wchar_t **__restrict __endptr,

                                        int __base) __THROW;

#endif /* ISO C99 or GCC and GNU.  */

__END_NAMESPACE_C99

#if defined __GNUC__ && defined __USE_GNU

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

   representation.  */

__extension__

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

                             wchar_t **__restrict __endptr, int __base)

     __THROW;

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

   representation.  */

__extension__

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

                                       wchar_t **__restrict __endptr,

                                       int __base) __THROW;

#endif /* GCC and use GNU.  */

#ifdef __USE_GNU

#ifdef __UCLIBC_HAS_XLOCALE__

/* The concept of one static locale per category is not very well

   thought out.  Many applications will need to process its data using

   information from several different locales.  Another application is

   the implementation of the internationalization handling in the

   upcoming ISO C++ standard library.  To support this another set of

   the functions using locale data exist which have an additional

   argument.

   Attention: all these functions are *not* standardized in any form.

   This is a proof-of-concept implementation.  */

/* Structure for reentrant locale using functions.  This is an

   (almost) opaque type for the user level programs.  */

# include <xlocale.h>

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

   use as an additional parameter.  */

extern long int wcstol_l (__const wchar_t *__restrict __nptr,

                          wchar_t **__restrict __endptr, int __base,

                          __locale_t __loc) __THROW;

extern long int __wcstol_l (__const wchar_t *__restrict __nptr,

                          wchar_t **__restrict __endptr, int __base,

                          __locale_t __loc) __THROW;

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

                                    wchar_t **__restrict __endptr,

                                    int __base, __locale_t __loc) __THROW;

extern unsigned long int __wcstoul_l (__const wchar_t *__restrict __nptr,

                                    wchar_t **__restrict __endptr,

                                    int __base, __locale_t __loc) __THROW;

__extension__

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

                                wchar_t **__restrict __endptr,

                                int __base, __locale_t __loc) __THROW;

__extension__

extern long long int __wcstoll_l (__const wchar_t *__restrict __nptr,

                                wchar_t **__restrict __endptr,

                                int __base, __locale_t __loc) __THROW;

__extension__

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

                                          wchar_t **__restrict __endptr,

                                          int __base, __locale_t __loc)

     __THROW;

__extension__

extern unsigned long long int __wcstoull_l (__const wchar_t *__restrict __nptr,

                                          wchar_t **__restrict __endptr,

                                          int __base, __locale_t __loc)

     __THROW;

#ifdef __UCLIBC_HAS_FLOATS__

extern double wcstod_l (__const wchar_t *__restrict __nptr,

                        wchar_t **__restrict __endptr, __locale_t __loc)

     __THROW;

extern double __wcstod_l (__const wchar_t *__restrict __nptr,

                        wchar_t **__restrict __endptr, __locale_t __loc)

     __THROW;

extern float wcstof_l (__const wchar_t *__restrict __nptr,

                       wchar_t **__restrict __endptr, __locale_t __loc)

     __THROW;

extern float __wcstof_l (__const wchar_t *__restrict __nptr,

                       wchar_t **__restrict __endptr, __locale_t __loc)

     __THROW;

extern long double wcstold_l (__const wchar_t *__restrict __nptr,

                              wchar_t **__restrict __endptr,

                              __locale_t __loc) __THROW;

extern long double __wcstold_l (__const wchar_t *__restrict __nptr,

                              wchar_t **__restrict __endptr,

                              __locale_t __loc) __THROW;

#endif /* __UCLIBC_HAS_FLOATS__ */

#endif /* __UCLIBC_HAS_XLOCALE__ */

#endif /* GNU */

#if 0

#ifdef __UCLIBC_HAS_FLOATS__

/* The internal entry points for `wcstoX' take an extra flag argument

   saying whether or not to parse locale-dependent number grouping.  */

extern double __wcstod_internal (__const wchar_t *__restrict __nptr,

                                 wchar_t **__restrict __endptr, int __group)

     __THROW;

extern float __wcstof_internal (__const wchar_t *__restrict __nptr,

                                wchar_t **__restrict __endptr, int __group)

     __THROW;

extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,

                                       wchar_t **__restrict __endptr,

                                       int __group) __THROW;

#endif /* __UCLIBC_HAS_FLOATS__ */

#ifndef __wcstol_internal_defined

extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,

                                   wchar_t **__restrict __endptr,

                                   int __base, int __group) __THROW;

# define __wcstol_internal_defined      1

#endif

#ifndef __wcstoul_internal_defined

extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,

                                             wchar_t **__restrict __endptr,

                                             int __base, int __group) __THROW;

# define __wcstoul_internal_defined     1

#endif

#ifndef __wcstoll_internal_defined

__extension__

extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,

                                         wchar_t **__restrict __endptr,

                                         int __base, int __group) __THROW;

# define __wcstoll_internal_defined     1

#endif

#ifndef __wcstoull_internal_defined

__extension__

extern unsigned long long int __wcstoull_internal (__const wchar_t *

                                                   __restrict __nptr,

                                                   wchar_t **

                                                   __restrict __endptr,

                                                   int __base,

                                                   int __group) __THROW;

# define __wcstoull_internal_defined    1

#endif

#if defined __OPTIMIZE__ && __GNUC__ >= 2

/* Define inline functions which call the internal entry points.  */

/* __BEGIN_NAMESPACE_C99 */

/* extern __inline double wcstod (__const wchar_t *__restrict __nptr, */

/*                             wchar_t **__restrict __endptr) __THROW */

/* { return __wcstod_internal (__nptr, __endptr, 0); } */

/* extern __inline long int wcstol (__const wchar_t *__restrict __nptr, */

/*                                  wchar_t **__restrict __endptr, */

/*                               int __base) __THROW */

/* { return __wcstol_internal (__nptr, __endptr, __base, 0); } */

/* extern __inline unsigned long int wcstoul (__const wchar_t *__restrict __nptr, */

/*                                            wchar_t **__restrict __endptr, */

/*                                         int __base) __THROW */

/* { return __wcstoul_internal (__nptr, __endptr, __base, 0); } */

/* __END_NAMESPACE_C99 */

# ifdef __USE_GNU

/* extern __inline float wcstof (__const wchar_t *__restrict __nptr, */

/*                            wchar_t **__restrict __endptr) __THROW */

/* { return __wcstof_internal (__nptr, __endptr, 0); } */

/* extern __inline long double wcstold (__const wchar_t *__restrict __nptr, */

/*                                   wchar_t **__restrict __endptr) __THROW */

/* { return __wcstold_internal (__nptr, __endptr, 0); } */

/* __extension__ */

/* extern __inline long long int wcstoq (__const wchar_t *__restrict __nptr, */

/*                                    wchar_t **__restrict __endptr, */

/*                                    int __base) __THROW */

/* { return __wcstoll_internal (__nptr, __endptr, __base, 0); } */

/* __extension__ */

/* extern __inline unsigned long long int wcstouq (__const wchar_t * */

/*                                              __restrict __nptr, */

/*                                              wchar_t **__restrict __endptr, */

/*                                              int __base) __THROW */

/* { return __wcstoull_internal (__nptr, __endptr, __base, 0); } */

# endif /* Use GNU.  */

#endif /* Optimizing GCC >=2.  */

#endif /* 0 */

#ifdef  __USE_GNU

/* Copy SRC to DEST, returning the address of the terminating L'\0' in

   DEST.  */

extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;

/* Copy no more than N characters of SRC to DEST, returning the address of

   the last character written into DEST.  */

extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)

     __THROW;

#endif  /* use GNU */

/* Wide character I/O functions.  */

#if defined __USE_ISOC99 || defined __USE_UNIX98

__BEGIN_NAMESPACE_C99

/* Select orientation for stream.  */

extern int fwide (__FILE *__fp, int __mode) __THROW;

/* Write formatted output to STREAM.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int fwprintf (__FILE *__restrict __stream,

                     __const wchar_t *__restrict __format, ...)

     /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;

/* Write formatted output to stdout.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int wprintf (__const wchar_t *__restrict __format, ...)

     /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;

/* Write formatted output of at most N characters to S.  */

extern int swprintf (wchar_t *__restrict __s, size_t __n,

                     __const wchar_t *__restrict __format, ...)

     __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;

/* Write formatted output to S from argument list ARG.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int vfwprintf (__FILE *__restrict __s,

                      __const wchar_t *__restrict __format,

                      __gnuc_va_list __arg)

     /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;

/* Write formatted output to stdout from argument list ARG.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int vwprintf (__const wchar_t *__restrict __format,

                     __gnuc_va_list __arg)

     /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;

/* Write formatted output of at most N character to S from argument

   list ARG.  */

extern int vswprintf (wchar_t *__restrict __s, size_t __n,

                      __const wchar_t *__restrict __format,

                      __gnuc_va_list __arg)

     __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;

/* Read formatted input from STREAM.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int fwscanf (__FILE *__restrict __stream,

                    __const wchar_t *__restrict __format, ...)

     /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;

/* Read formatted input from stdin.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int wscanf (__const wchar_t *__restrict __format, ...)

     /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;

/* Read formatted input from S.  */

extern int swscanf (__const wchar_t *__restrict __s,

                    __const wchar_t *__restrict __format, ...)

     __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;

__END_NAMESPACE_C99

#endif /* Use ISO C99 and Unix98. */

#ifdef __USE_ISOC99

__BEGIN_NAMESPACE_C99

/* Read formatted input from S into argument list ARG.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int vfwscanf (__FILE *__restrict __s,

                     __const wchar_t *__restrict __format,

                     __gnuc_va_list __arg)

     /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;

/* Read formatted input from stdin into argument list ARG.

   This function is a possible cancellation point and therefore not

   marked with __THROW.  */

extern int vwscanf (__const wchar_t *__restrict __format,

                    __gnuc_va_list __arg)

     /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;

/* Read formatted input from S into argument list ARG.  */

extern int vswscanf (__const wchar_t *__restrict __s,

                     __const wchar_t *__restrict __format,

                     __gnuc_va_list __arg)

     __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;

__END_NAMESPACE_C99

#endif /* Use ISO C99. */

__BEGIN_NAMESPACE_C99

/* Read a character from STREAM.

   These functions are possible cancellation points and therefore not

   marked with __THROW.  */

extern wint_t fgetwc (__FILE *__stream);

extern wint_t getwc (__FILE *__stream);

/* Read a character from stdin.