int _PDCLIB_rename( const char * old, const char * new )
{
/* Note that the behaviour if new file exists is implementation-defined.
int _PDCLIB_rename( const char * old, const char * new )
{
/* Note that the behaviour if new file exists is implementation-defined.
/* check that neither file exists */
TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
TESTCASE( fopen( filename2, "r" ) == NULL );
/* check that neither file exists */
TESTCASE( fopen( filename1 + 6, "r" ) == NULL );
TESTCASE( fopen( filename2, "r" ) == NULL );