mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/* Copyright (C) 1995 Free Software Foundation, Inc.
|
|
This file is part of GNU Fortran libU77 library.
|
|
|
|
This library is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Library General Public License as published
|
|
by the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
GNU Fortran 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with GNU Fortran; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
#if HAVE_STDLIB_H
|
|
# include <stdlib.h>
|
|
#endif
|
|
#include "f2c.h"
|
|
#ifndef RAND_MAX
|
|
# define RAND_MAX 2147483647 /* from SunOS */
|
|
#endif
|
|
|
|
/* We could presumably do much better than the traditional libc
|
|
version, though at least the glibc one is reasonable, it seems.
|
|
For the sake of the innocent, I'm not sure we should really do
|
|
this... */
|
|
|
|
/* Note this is per SunOS -- other s may have no arg. */
|
|
|
|
#ifdef KR_headers
|
|
double G77_rand_0 (flag)
|
|
integer *flag;
|
|
#else
|
|
double G77_rand_0 (integer *flag)
|
|
#endif
|
|
{
|
|
switch (*flag) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
srand (0); /* Arbitrary choice of initialiser. */
|
|
break;
|
|
default:
|
|
srand (*flag);
|
|
}
|
|
return (float) rand () / RAND_MAX;
|
|
}
|