xref: /llvm-project/libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/values.pass.cpp (revision 2df59c50688c122bbcae7467d3eaf862c3ea3088)
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 // public:
15 //     // types
16 //     typedef typename Engine::result_type result_type;
17 //
18 //     // engine characteristics
19 //     static constexpr size_t table_size = k;
20 //     static constexpr result_type min() { return Engine::min; }
21 //     static constexpr result_type max() { return Engine::max; }
22 
23 #include <random>
24 #include <type_traits>
25 #include <cassert>
26 
27 #include "test_macros.h"
28 
29 template <class T>
where(const T &)30 void where(const T &) {}
31 
32 void
test1()33 test1()
34 {
35     typedef std::knuth_b E;
36     static_assert(E::table_size == 256, "");
37 #if TEST_STD_VER >= 11
38     static_assert((E::min() == 1), "");
39     static_assert((E::max() == 2147483646), "");
40 #else
41     assert((E::min() == 1));
42     assert((E::max() == 2147483646));
43 #endif
44     where(E::table_size);
45 }
46 
main(int,char **)47 int main(int, char**)
48 {
49     test1();
50 
51   return 0;
52 }
53