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#ifndef _CTYPE_H
#define _CTYPE_H
/** @file
*
* Character types
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/**
* Check if character is a decimal digit
*
* @v character ASCII character
* @ret is_digit Character is a decimal digit
*/
static inline int isdigit ( int character ) {
return ( ( character >= '0' ) && ( character <= '9' ) );
}
/**
* Check if character is a hexadecimal digit
*
* @v character ASCII character
* @ret is_xdigit Character is a hexadecimal digit
*/
static inline int isxdigit ( int character ) {
return ( ( ( character >= '0' ) && ( character <= '9' ) ) ||
( ( character >= 'A' ) && ( character <= 'F' ) ) ||
( ( character >= 'a' ) && ( character <= 'f' ) ) );
}
/**
* Check if character is an upper-case letter
*
* @v character ASCII character
* @ret is_upper Character is an upper-case letter
*/
static inline int isupper ( int character ) {
return ( ( character >= 'A' ) && ( character <= 'Z' ) );
}
/**
* Check if character is a lower-case letter
*
* @v character ASCII character
* @ret is_lower Character is a lower-case letter
*/
static inline int islower ( int character ) {
return ( ( character >= 'a' ) && ( character <= 'z' ) );
}
/**
* Check if character is alphabetic
*
* @v character ASCII character
* @ret is_alpha Character is alphabetic
*/
static inline int isalpha ( int character ) {
return ( isupper ( character ) || islower ( character ) );
}
/**
* Check if character is alphanumeric
*
* @v character ASCII character
* @ret is_alnum Character is alphanumeric
*/
static inline int isalnum ( int character ) {
return ( isalpha ( character ) || isdigit ( character ) );
}
/**
* Check if character is printable
*
* @v character ASCII character
* @ret is_print Character is printable
*/
static inline int isprint ( int character ) {
return ( ( character >= ' ' ) && ( character <= '~' ) );
}
/**
* Convert character to lower case
*
* @v character Character
* @v character Lower-case character
*/
static inline int tolower ( int character ) {
return ( isupper ( character ) ?
( character - 'A' + 'a' ) : character );
}
/**
* Convert character to upper case
*
* @v character Character
* @v character Upper-case character
*/
static inline int toupper ( int character ) {
return ( islower ( character ) ?
( character - 'a' + 'A' ) : character );
}
extern int isspace ( int character );
#endif /* _CTYPE_H */
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