xref: /llvm-project/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/copy.pass.cpp (revision 7fc6a55688c816f5fc1a5481ae7af25be7500356)
1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <random>
10 
11 // template<class Engine, size_t k>
12 // class shuffle_order_engine
13 
14 // shuffle_order_engine(const shuffle_order_engine&);
15 
16 #include <random>
17 #include <cassert>
18 
19 #include "test_macros.h"
20 
21 void
test1()22 test1()
23 {
24     typedef std::knuth_b E;
25     E e1;
26     (void)e1();
27     E e2 = e1;
28     assert(e1 == e2);
29     assert(e1() == e2());
30     E::result_type k = e1();
31     assert(e1 != e2);
32     assert(e2() == k);
33     assert(e1 == e2);
34 }
35 
main(int,char **)36 int main(int, char**)
37 {
38     test1();
39 
40   return 0;
41 }
42