-// ----------------------------------------------------------------------------
-// $Id$
-// ----------------------------------------------------------------------------
-// Public Domain C Library - http://pdclib.sourceforge.net
-// This code is Public Domain. Use, modify, and redistribute at will.
-// ----------------------------------------------------------------------------
-
-void clearerr( FILE * stream ) { /* TODO */ };
+/* $Id$ */
+
+/* clearerr( FILE * )
+
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+
+void clearerr( struct _PDCLIB_file_t * stream )
+{
+ stream->status &= ~( _PDCLIB_ERRORFLAG | _PDCLIB_EOFFLAG );
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main( void )
+{
+ FILE * fh;
+ remove( "testfile" );
+ TESTCASE( ( fh = fopen( "testfile", "w+" ) ) != NULL );
+ /* Flags should be clear */
+ TESTCASE( ! ferror( fh ) );
+ TESTCASE( ! feof( fh ) );
+ /* Reading from input stream - should provoke error */
+ TESTCASE( fgetc( fh ) == EOF );
+ TESTCASE( ferror( fh ) );
+ TESTCASE( ! feof( fh ) );
+ /* clearerr() should clear flags */
+ clearerr( fh );
+ TESTCASE( ! ferror( fh ) );
+ TESTCASE( ! feof( fh ) );
+ /* Reading from empty stream - should provoke EOF */
+ rewind( fh );
+ TESTCASE( fgetc( fh ) == EOF );
+ TESTCASE( ! ferror( fh ) );
+ TESTCASE( feof( fh ) );
+ /* clearerr() should clear flags */
+ clearerr( fh );
+ TESTCASE( ! ferror( fh ) );
+ TESTCASE( ! feof( fh ) );
+ TESTCASE( fclose( fh ) == 0 );
+ remove( "testfile" );
+ return TEST_RESULTS;
+}
+
+#endif
+