libcxx/test/std/numerics/rand/rand.adapt/rand.adapt.shuf/seed_sseq.pass.cpp

   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 // template<class Sseq> void seed(Sseq& q);
  15
  16 #include <random>
  17 #include <cassert>
  18
  19 #include "test_macros.h"
  20
  21 void
  22 test1()
  23 {
  24     unsigned a[] = {3, 5, 7};
  25     std::seed_seq sseq(a, a+3);
  26     std::knuth_b e1;
  27     std::knuth_b e2(sseq);
  28     assert(e1 != e2);
  29     e1.seed(sseq);
  30     assert(e1 == e2);
  31 }
  32
  33 int main(int, char**)
  34 {
  35     test1();
  36
  37   return 0;
  38 }