/* Copyright (C) 1996-2023 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, see
. */
/*
* ISO C99 Standard: 7.25
* Wide character classification and mapping utilities
*/
#ifndef _BITS_WCTYPE_WCHAR_H
#define _BITS_WCTYPE_WCHAR_H 1
#if !defined _WCTYPE_H && !defined _WCHAR_H
#error "Never include directly; include or instead."
#endif
#include
#include
/* The definitions in this header are specified to appear in
in ISO C99, but in in Unix98. _GNU_SOURCE follows C99. */
/* Scalar type that can hold values which represent locale-specific
character classifications. */
typedef unsigned long int wctype_t;
# ifndef _ISwbit
/* The characteristics are stored always in network byte order (big
endian). We define the bit value interpretations here dependent on the
machine's byte order. */
# include
# if __BYTE_ORDER == __BIG_ENDIAN
# define _ISwbit(bit) (1 << (bit))
# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
# define _ISwbit(bit) \
((bit) < 8 ? (int) ((1UL << (bit)) << 24) \
: ((bit) < 16 ? (int) ((1UL << (bit)) << 8) \
: ((bit) < 24 ? (int) ((1UL << (bit)) >> 8) \
: (int) ((1UL << (bit)) >> 24))))
# endif
enum
{
__ISwupper = 0, /* UPPERCASE. */
__ISwlower = 1, /* lowercase. */
__ISwalpha = 2, /* Alphabetic. */
__ISwdigit = 3, /* Numeric. */
__ISwxdigit = 4, /* Hexadecimal numeric. */
__ISwspace = 5, /* Whitespace. */
__ISwprint = 6, /* Printing. */
__ISwgraph = 7, /* Graphical. */
__ISwblank = 8, /* Blank (usually SPC and TAB). */
__ISwcntrl = 9, /* Control character. */
__ISwpunct = 10, /* Punctuation. */
__ISwalnum = 11, /* Alphanumeric. */
_ISwupper = _ISwbit (__ISwupper), /* UPPERCASE. */
_ISwlower = _ISwbit (__ISwlower), /* lowercase. */
_ISwalpha = _ISwbit (__ISwalpha), /* Alphabetic. */
_ISwdigit = _ISwbit (__ISwdigit), /* Numeric. */
_ISwxdigit = _ISwbit (__ISwxdigit), /* Hexadecimal numeric. */
_ISwspace = _ISwbit (__ISwspace), /* Whitespace. */
_ISwprint = _ISwbit (__ISwprint), /* Printing. */
_ISwgraph = _ISwbit (__ISwgraph), /* Graphical. */
_ISwblank = _ISwbit (__ISwblank), /* Blank (usually SPC and TAB). */
_ISwcntrl = _ISwbit (__ISwcntrl), /* Control character. */
_ISwpunct = _ISwbit (__ISwpunct), /* Punctuation. */
_ISwalnum = _ISwbit (__ISwalnum) /* Alphanumeric. */
};
# endif /* Not _ISwbit */
__BEGIN_DECLS
/*
* Wide-character classification functions: 7.15.2.1.
*/
/* Test for any wide character for which `iswalpha' or `iswdigit' is
true. */
extern int iswalnum (wint_t __wc) __THROW;
/* Test for any wide character for which `iswupper' or 'iswlower' is
true, or any wide character that is one of a locale-specific set of
wide-characters for which none of `iswcntrl', `iswdigit',
`iswpunct', or `iswspace' is true. */
extern int iswalpha (wint_t __wc) __THROW;
/* Test for any control wide character. */
extern int iswcntrl (wint_t __wc) __THROW;
/* Test for any wide character that corresponds to a decimal-digit
character. */
extern int iswdigit (wint_t __wc) __THROW;
/* Test for any wide character for which `iswprint' is true and
`iswspace' is false. */
extern int iswgraph (wint_t __wc) __THROW;
/* Test for any wide character that corresponds to a lowercase letter
or is one of a locale-specific set of wide characters for which
none of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
extern int iswlower (wint_t __wc) __THROW;
/* Test for any printing wide character. */
extern int iswprint (wint_t __wc) __THROW;
/* Test for any printing wide character that is one of a
locale-specific et of wide characters for which neither `iswspace'
nor `iswalnum' is true. */
extern int iswpunct (wint_t __wc) __THROW;
/* Test for any wide character that corresponds to a locale-specific
set of wide characters for which none of `iswalnum', `iswgraph', or
`iswpunct' is true. */
extern int iswspace (wint_t __wc) __THROW;
/* Test for any wide character that corresponds to an uppercase letter
or is one of a locale-specific set of wide character for which none
of `iswcntrl', `iswdigit', `iswpunct', or `iswspace' is true. */
extern int iswupper (wint_t __wc) __THROW;
/* Test for any wide character that corresponds to a hexadecimal-digit
character equivalent to that performed be the functions described
in the previous subclause. */
extern int iswxdigit (wint_t __wc) __THROW;
/* Test for any wide character that corresponds to a standard blank
wide character or a locale-specific set of wide characters for
which `iswalnum' is false. */
# ifdef __USE_ISOC99
extern int iswblank (wint_t __wc) __THROW;
# endif
/*
* Extensible wide-character classification functions: 7.15.2.2.
*/
/* Construct value that describes a class of wide characters identified
by the string argument PROPERTY. */
extern wctype_t wctype (const char *__property) __THROW;
/* Determine whether the wide-character WC has the property described by
DESC. */
extern int iswctype (wint_t __wc, wctype_t __desc) __THROW;
/*
* Wide-character case-mapping functions: 7.15.3.1.
*/
/* Converts an uppercase letter to the corresponding lowercase letter. */
extern wint_t towlower (wint_t __wc) __THROW;
/* Converts an lowercase letter to the corresponding uppercase letter. */
extern wint_t towupper (wint_t __wc) __THROW;
__END_DECLS
#endif /* bits/wctype-wchar.h. */