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/* Implementation of the FLUSH intrinsic.
Copyright (C) 2004 Free Software Foundation, Inc.
Contributed by Steven G. Kargl <kargls@comcast.net>.
This file is part of the GNU Fortran 95 runtime library (libgfortran).
Libgfortran is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Libgfortran is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with libgfor; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "config.h"
#include "libgfortran.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "../io/io.h"
/* SUBROUTINE FLUSH(UNIT)
INTEGER, INTENT(IN), OPTIONAL :: UNIT */
static void
recursive_flush (gfc_unit *us)
{
/* There can be no open files. */
if (us == NULL)
return;
flush (us->s);
recursive_flush (us->left);
recursive_flush (us->right);
}
void
prefix(flush_i4) (GFC_INTEGER_4 * unit)
{
gfc_unit *us;
/* flush all streams */
if (unit == NULL)
{
us = g.unit_root;
recursive_flush(us);
}
else
{
us = find_unit(*unit);
if (us != NULL)
flush (us->s);
}
}
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