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_ALPHA );
22 #include <_PDCLIB_test.h>
26 TESTCASE( isalpha( 'a' ) );
27 TESTCASE( isalpha( 'z' ) );
28 TESTCASE( ! isalpha( ' ' ) );
29 TESTCASE( ! isalpha( '1' ) );
30 TESTCASE( ! isalpha( '@' ) );