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/* ****************************************************************************
* ctype.h -- Character type.
*
* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
*
* This file is part of the 'all/core' module in libcarrot, an experimental
* modular libc project.
*
* This file 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 file 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 Lesser Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this file. If not, see <http://www.gnu.org/licenses/>.
* ************************************************************************* */
#include <cdefs.h>
__BEGIN_DECLS
/* ************************************************************************* */
/* Symbols (if no macros) */
/* ************************************************************************* */
/* check type */
__BEGIN_NAMESPACE_STD
extern __pure int isalnum _OF((int __c)) __THROW;
extern __pure int isalpha _OF((int __c)) __THROW;
extern __pure int isascii _OF((int __c)) __THROW;
extern __pure int iscntrl _OF((int __c)) __THROW;
extern __pure int isdigit _OF((int __c)) __THROW;
extern __pure int isgraph _OF((int __c)) __THROW;
extern __pure int islower _OF((int __c)) __THROW;
extern __pure int isprint _OF((int __c)) __THROW;
extern __pure int ispunct _OF((int __c)) __THROW;
extern __pure int isspace _OF((int __c)) __THROW;
extern __pure int isupper _OF((int __c)) __THROW;
extern __pure int isxdigit _OF((int __c)) __THROW;
__END_NAMESPACE_STD
__BEGIN_NAMESPACE_C99
extern __pure int isblank _OF((int __c)) __THROW;
__END_NAMESPACE_C99
/* convert to lower or upper */
__BEGIN_NAMESPACE_STD
extern __pure int tolower _OF((int __c)) __THROW;
extern __pure int toupper _OF((int __c)) __THROW;
extern __pure int toascii _OF((int __c)) __THROW;
__END_NAMESPACE_STD
/* ************************************************************************* */
/* Macros for interacting with the tab */
/* ************************************************************************* */
/* Prepare the bits generation */
#include <endian.h>
#if __BYTE_ORDER == __BIG_ENDIAN
# define _ISbit(bit) (1 << (bit))
#else /* __BYTE_ORDER == __LITTLE_ENDIAN */
# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
#endif
/* Make the bits */
#define _ISupper _ISbit(0) /* uppercase */
#define _ISlower _ISbit(1) /* lowercase */
#define _ISalpha _ISbit(2) /* alphabetic */
#define _ISdigit _ISbit(3) /* numeric */
#define _ISxdigit _ISbit(4) /* hexadecimal numeric */
#define _ISspace _ISbit(5) /* whitespace */
#define _ISprint _ISbit(6) /* printable */
#define _ISgraph _ISbit(7) /* Graphical */
#define _ISblank _ISbit(8) /* Blank */
#define _IScntrl _ISbit(9) /* Control character */
#define _ISpunct _ISbit(10) /* Punctuation */
#define _ISalnum _ISbit(11) /* Alphanumeric */
/* The block */
extern const unsigned short __ctype_b[];
#define __isctype(_C, _TYPE) \
(__ctype_b[(int)(_C)] & (unsigned short int)(_TYPE))
/* Macros */
#ifndef __NO_CTYPE
# define isalnum(C) __isctype((C), _ISalpha | _ISdigit)
# define isalpha(C) __isctype((C), _ISalpha)
# define isascii(C) ((C) < 0x80)
# define isblank(C) __isctype((C), _ISblank)
# define iscntrl(C) __isctype((C), _IScntrl)
# define isdigit(C) __isctype((C), _ISdigit)
# define isgraph(C) __isctype((C), _ISgraph)
# define islower(C) __isctype((C), _ISlower)
# define isprint(C) __isctype((C), _ISprint)
# define ispunct(C) __isctype((C), _ISpunct)
# define isspace(C) __isctype((C), _ISspace)
# define isupper(C) __isctype((C), _ISupper)
# define isxdigit(C) __isctype((C), _ISxdigit)
# define toascii(C) ((C) & 0x7F)
#endif
__END_DECLS
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