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/* 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;
TESTCASE( ( fh = tmpfile() ) != NULL );
/* Flags should be clear */
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 ) );
/* reopen() the file write-only */
TESTCASE( ( fh = freopen( NULL, "w", fh ) ) != NULL );
/* Reading from write-only 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 ) );
TESTCASE( fclose( fh ) == 0 );
return TEST_RESULTS;
}
#endif
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