55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
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/* Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of GNU Fortran libU77 library.
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GNU Fortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with GNU Fortran; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if HAVE_STDLIB_H
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# include <stdlib.h>
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#endif
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#include "f2c.h"
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#ifndef RAND_MAX
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# define RAND_MAX 2147483647 /* from SunOS */
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#endif
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/* We could presumably do much better than the traditional libc
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version, though at least the glibc one is reasonable, it seems.
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For the sake of the innocent, I'm not sure we should really do
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this... */
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/* Note this is per SunOS -- other s may have no arg. */
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#ifdef KR_headers
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double G77_rand_0 (flag)
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integer *flag;
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#else
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double G77_rand_0 (integer *flag)
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#endif
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{
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switch (*flag) {
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case 0:
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break;
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case 1:
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srand (0); /* Arbitrary choice of initialiser. */
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break;
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default:
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srand (*flag);
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}
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return (float) rand () / RAND_MAX;
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}
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