-/* returns nonzero if c is a horizontal blank in the locale. */
-int isblank( int c );
-
-/* returns nonzero if c is a control character in the locale. */
-int iscntrl( int c );
-
-/* returns nonzero if c is a digit in the locale. */
-int isdigit( int c );
-
-/* returns nonzero if c is alphanumeric or a punctuation in the locale. */
-int isgraph( int c );
-
-/* returns nonzero if c is a lowercase alphabetic character in the locale. */
-int islower( int c );
-
-/* returns nonzero if c is a printable character ( isgraph() or isblank() ) in
- * the locale. */
-int isprint( int c );
-
-/* returns nonzero if c is a punctuation in the locale. */
-int ispunct( int c );
-
-/* returns nonzero if c is a whitespace in the locale. */
-int isspace( int c );
-
-/* returns nonzero if c is an uppercase alphabetical character in the locale. */
-int isupper( int c );
-
-/* returns nonzero if c is a hexedecimal digit in the locale. */
-int isxdigit( int c );
-
-/* returns lowercase equivalent for c in locale. */