5 This file is part of the Public Domain C Library (PDCLib).
6 Permission is granted to use, modify, and / or redistribute at will.
12 #include <_PDCLIB_locale.h>
16 return ( _PDCLIB_threadlocale()->_CType[c].flags & _PDCLIB_CTYPE_CNTRL );
22 #include <_PDCLIB_test.h>
26 TESTCASE( iscntrl( '\a' ) );
27 TESTCASE( iscntrl( '\b' ) );
28 TESTCASE( iscntrl( '\n' ) );
29 TESTCASE( ! iscntrl( ' ' ) );