From 00893e79fc62966067af1a106567db96bd170338 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Sun, 3 Mar 2024 19:11:32 +0100 Subject: New upstream version 1.2 --- tests/test-random.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 tests/test-random.c (limited to 'tests/test-random.c') diff --git a/tests/test-random.c b/tests/test-random.c new file mode 100644 index 00000000..4bfc1b84 --- /dev/null +++ b/tests/test-random.c @@ -0,0 +1,49 @@ +/* Test random. + Copyright (C) 2008-2024 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . */ + +#include + +#include + +#include "signature.h" +SIGNATURE_CHECK (srandom, void, (unsigned int)); +SIGNATURE_CHECK (initstate, char *, (unsigned int, char *, size_t)); +SIGNATURE_CHECK (setstate, char *, (char *)); +SIGNATURE_CHECK (random, long, (void)); + +#include + +#include "macros.h" + +int +main () +{ + char buf[128]; + unsigned int i; + unsigned int n_big = 0; + + initstate (time (NULL), buf, sizeof buf); + for (i = 0; i < 1000; i++) + { + long r = random (); + ASSERT (0 <= r); + if (RAND_MAX / 2 < r) + ++n_big; + } + + /* Fail if none of the numbers were larger than RAND_MAX / 2. */ + return !n_big; +} -- cgit v1.2.3