1/* Implementation of the SLEEP intrinsic.
2   Copyright (C) 2005-2022 Free Software Foundation, Inc.
3   Contributed by Fran��ois-Xavier Coudert <coudert@clipper.ens.fr>
4
5This file is part of the GNU Fortran 95 runtime library (libgfortran).
6
7Libgfortran is free software; you can redistribute it and/or
8modify it under the terms of the GNU General Public
9License as published by the Free Software Foundation; either
10version 3 of the License, or (at your option) any later version.
11
12Libgfortran is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24<http://www.gnu.org/licenses/>.  */
25
26#include "libgfortran.h"
27
28#ifdef HAVE_UNISTD_H
29#include <unistd.h>
30#endif
31
32#ifdef __MINGW32__
33# include <windows.h>
34# undef sleep
35# define sleep(x) Sleep(1000*(x))
36# define HAVE_SLEEP 1
37#endif
38
39/* SUBROUTINE SLEEP(SECONDS)
40   INTEGER, INTENT(IN) :: SECONDS
41
42   A choice had to be made if SECONDS is negative. For g77, this is
43   equivalent to SLEEP(0).  */
44
45#ifdef HAVE_SLEEP
46extern void sleep_i4_sub (GFC_INTEGER_4 *);
47iexport_proto(sleep_i4_sub);
48
49void
50sleep_i4_sub (GFC_INTEGER_4 *seconds)
51{
52  sleep (*seconds < 0 ? 0 : (unsigned int) *seconds);
53}
54iexport(sleep_i4_sub);
55
56extern void sleep_i8_sub (GFC_INTEGER_8 *);
57iexport_proto(sleep_i8_sub);
58
59void
60sleep_i8_sub (GFC_INTEGER_8 *seconds)
61{
62  sleep (*seconds < 0 ? 0 : (unsigned int) *seconds);
63}
64iexport(sleep_i8_sub);
65#endif
66