For a namespace clean function, implement _close, otherwise implement close. The detailed implementation will depend on the file handling functionality available.

In the minimal implementation, this function always fails, since there is only standard output, which is not a valid file to close. This implementation is sufficient for the OpenRISC 1000 .

#include <errno.h>

#undef errno
extern int  errno;

int
_close (int   file)
{
  errno = EBADF;
  
  return -1;                    /* Always fails */

}       /* _close () */