git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 81fea2b1 JL |
1 | /* Copyright (C) 1995 Free Software Foundation, Inc. |
| 2 | This file is part of GNU Fortran libU77 library. | |
| 3 | ||
| 4 | This library is free software; you can redistribute it and/or modify it | |
| 5 | under the terms of the GNU Library General Public License as published | |
| 6 | by the Free Software Foundation; either version 2 of the License, or | |
| 7 | (at your option) any later version. | |
| 8 | ||
| 9 | GNU Fortran is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Library General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Library General Public | |
| 15 | License along with GNU Fortran; see the file COPYING.LIB. If | |
| 16 | not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 17 | Boston, MA 02111-1307, USA. */ | |
| 18 | ||
| 19 | #ifdef HAVE_CONFIG_H | |
| 20 | #include "config.h" | |
| 21 | #endif | |
| 22 | #if HAVE_STDLIB_H | |
| 23 | # include <stdlib.h> | |
| 24 | #endif | |
| 25 | #include "f2c.h" | |
| 26 | #ifndef RAND_MAX | |
| 27 | # define RAND_MAX 2147483647 /* from SunOS */ | |
| 28 | #endif | |
| 29 | ||
| 30 | /* We could presumably do much better than the traditional libc | |
| 31 | version, though at least the glibc one is reasonable, it seems. | |
| 32 | For the sake of the innocent, I'm not sure we should really do | |
| 33 | this... */ | |
| 34 | ||
| 35 | /* Note this is per SunOS -- other s may have no arg. */ | |
| 36 | ||
| 37 | #ifdef KR_headers | |
| 38 | double G77_rand_0 (flag) | |
| 39 | integer *flag; | |
| 40 | #else | |
| 41 | double G77_rand_0 (integer *flag) | |
| 42 | #endif | |
| 43 | { | |
| 44 | switch (*flag) { | |
| 45 | case 0: | |
| 46 | break; | |
| 47 | case 1: | |
| 48 | srand (0); /* Arbitrary choice of initialiser. */ | |
| 49 | break; | |
| 50 | default: | |
| 51 | srand (*flag); | |
| 52 | } | |
| 53 | return (float) rand () / RAND_MAX; | |
| 54 | } |