+/* $Id$ */
+
+/* isblank( int )
+
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <ctype.h>
+
+#ifndef REGTEST
+
+int isblank( int c )
+{
+ return ( _PDCLIB_locale_info.ctype[c].flags & _PDCLIB_CTYPE_BLANK );
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ TESTCASE( isblank( ' ' ) );
+ TESTCASE( isblank( '\t' ) );
+ TESTCASE( ! isblank( '\v' ) );
+ TESTCASE( ! isblank( '\r' ) );
+ TESTCASE( ! isblank( 'x' ) );
+ TESTCASE( ! isblank( '@' ) );
+ return TEST_RESULTS;
+}
+
+#endif