#ifndef _RTLIBC_CTYPE_H
#define _RTLIBC_CTYPE_H


#include <stdbool.h>


#ifdef __cplusplus
extern "C"
{
#endif


static inline bool isspace(char c)
{
	return (c == ' ') ||
			(c == '\t') ||
			(c == '\n') ||
			(c == '\v') ||
			(c == '\f') ||
			(c == '\r');
}


static inline bool isdigit(char c)
{
	return (c >= '0') && (c <= '9');
}



static inline bool isxdigit(char c)
{
	return ((c >= '0') && (c <= '9')) ||
			((c >= 'a') && (c <= 'f')) || 
			((c >= 'A') && (c <= 'F'));
}



static inline bool islower(char c)
{
	return (c >= 'a') && (c <= 'z');
}



static inline bool isupper(char c)
{
	return (c >= 'A') && (c <= 'Z');
}



static inline bool isalpha(char c)
{
	return islower(c) || isupper(c);
}



static inline bool isalnum(char c)
{
	return isalpha(c) || isdigit(c);
}



static inline bool ispunct(char c)
{
	return ((c >= '!') && (c <= '/')) ||
			((c >= ':') && (c <= '@')) ||
			((c >= '[') && (c <= '`')) ||
			((c >= '{') && (c <= '~'));
}



static inline bool isgraph(char c)
{
	return isalnum(c) || ispunct(c);
}



static inline bool isprint(char c)
{
	return isgraph(c) || isspace(c);
}



static inline bool iscntrl(char c)
{
	return (c >= 0) && (c <= 37);
}



static inline bool isblank(char c)
{
	return (c == ' ') || (c == '\t');
}



static inline char tolower(char c)
{
	if (isupper(c))
		return c + ('a' - 'A');
	else
		return c;
}



static inline char toupper(char c)
{
	if (islower(c))
		return c - ('a' - 'A');
	else
		return c;
}


#ifdef __cplusplus
}
#endif


#endif