3 This file is part of the Public Domain C Library (PDCLib).
4 Permission is granted to use, modify, and / or redistribute at will.
10 #include <_PDCLIB_locale.h>
14 return ( _PDCLIB_threadlocale()->_CType[c].flags & _PDCLIB_CTYPE_DIGIT );
20 #include <_PDCLIB_test.h>
24 TESTCASE( isdigit( '0' ) );
25 TESTCASE( isdigit( '9' ) );
26 TESTCASE( ! isdigit( ' ' ) );
27 TESTCASE( ! isdigit( 'a' ) );
28 TESTCASE( ! isdigit( '@' ) );