diff options
Diffstat (limited to 'gnu/egcs/libf2c/libU77/rand_.c')
-rw-r--r-- | gnu/egcs/libf2c/libU77/rand_.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gnu/egcs/libf2c/libU77/rand_.c b/gnu/egcs/libf2c/libU77/rand_.c new file mode 100644 index 00000000000..165aee1220c --- /dev/null +++ b/gnu/egcs/libf2c/libU77/rand_.c @@ -0,0 +1,54 @@ +/* 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; +} |