/**************************************
 * ctype - Character Typing Functions *
 **************************************/

/* Check for Alphanumeric Character *
 *   (Alphabetic or Digit)          *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isalnm();

/* Checks for Alphabetic Character  *
 *   (Upper Case or Lower Case)     *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isalph();

/* Checks for Control Character     *
 *   (Less than Space or Delete)    *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isctrl();

/* Checks for Digit Character       *
 *  (In range 0-9)                  *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isdigt();

/* Checks for Graphical Character   *
 *  (Printable except Space)        *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isgrph();

/* Checks for Hex Digit Character   *
 *   (In range 0-9, A-F, or a-f)    *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte ishdgt();

/* Checks for Lower Case Character  *
 *  (In range a-z)                  *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte islowr();

/* Checks for Printable Character   *
 *  (Not High ASCII nor Control)    *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isprnt();

/* Checks for Punctuation Character *
 *   (Printable not Alphanumeric)   *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte ispnct();

/* Checks for White Space Character *
 *   (Space, Tab, NL, VT, FF, CR)   *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isspce();

/* Checks for Upper Case Character  *
 *  (In range A-Z)                  *
 * Args: c - Character to Check     *
 * Returns: TRUE or FALSE           */
byte isuppr();

/* Convert Character to Lower Case  *
 * Args: c - Character to Convert   *
 * Returns: Converted Character     */
byte tolowr();

/* Convert Character to Upper Case  *
 * Args: c - Character to Convert   *
 * Returns: Converted Character     */
byte touppr();