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/*---------------------------------------------------------------------------*/

/* ctype.h - character class tests                                           */

/*---------------------------------------------------------------------------*/



#ifndef _CTYPE_H

#define _CTYPE_H



#include <stddef.h>

#include <stdbool.h>



/*---------------------------------------------------------------------------*/

/* function prototpes                                                        */

/*---------------------------------------------------------------------------*/



bool isascii(int c);

bool iscntrl(int c);

bool isdigit(int c);

bool isupper(int c);

bool islower(int c);

bool isprint(int c);

bool isspace(int c);

bool isalpha(int c);

bool isalnum(int c);

bool isgraph(int c);

bool ispunct(int c);

bool isxupper(int c);

bool isxlower(int c);

bool isxdigit(int c);



int toascii(int c);

int toupper(int c);

int tolower(int c);



/*---------------------------------------------------------------------------*/

/* macro definitions                                                         */

/*---------------------------------------------------------------------------*/



#define _isascii(c)  (c > 0 && c <= 0x7f)

#define _iscntrl(c)  ((c > 0) && ((c < ' ') || (c == 0x7f)))

#define _isdigit(c)  (c >= '0' && c <= '9')

#define _isupper(c)  (c >=  'A' && c <= 'Z')

#define _islower(c)  (c >=  'a' && c <= 'z')

#define _isprint(c)  (c >= ' ' && c <= '~')

#define _isspace(c)  (c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t')

#define _isalpha(c)  (_isupper(c) || _islower(c))

#define _isalnum(c)  (_isalpha(c) || _isdigit(c))

#define _isgraph(c)  (c != ' ' && _isprint(c))

#define _ispunct(c)  ((c > ' ' && c <= '~') && !_isalnum(c))

#define _isxupper(c) (_isdigit(c) || (c >= 'A' && c <= 'F'))

#define _isxlower(c) (_isdigit(c) || (c >= 'a' && c <= 'f'))

#define _isxdigit(c) (_isxupper(c) || _isxlower(c))

#define _toascii(c)  (c & 0x7f)

#define _toupper(c)  (_islower(c) ? (c - ' ') : (c))

#define _tolower(c)  (_isupper(c) ? (c + ' ') : (c))



#endif