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/*
* Copyright Matt Borland 2025.
* Distributed under the Boost Software License, Version 1.0. (See
* accompanying file LICENSE_1_0.txt or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*
* See http://www.boost.org for most recent version including documentation.
*
* $Id$
*/
#include <boost/random.hpp>
#include <boost/core/lightweight_test.hpp>
#include <array>
#include <vector>
#include <random>
#include <cstdint>
template <class Arr>
bool all_words_equal(const Arr& a)
{
for (std::size_t i = 1; i < a.size(); ++i)
{
if (a[i] != a[0]) return false;
}
return true;
}
template <class Engine, class SSeq>
void test_engine_with_sseq(SSeq& sseq)
{
Engine eng(sseq);
auto st = eng.state();
BOOST_TEST(!all_words_equal(st));
}
int main()
{
const std::vector<std::uint32_t> seed_words = {
0x12345678u, 0x9abcdef0u, 0xc0ffee12u, 0xdeadbeefu
};
// xoshiro128mm (4 x 32-bit state)
std::seed_seq stdseq(seed_words.begin(), seed_words.end());
boost::random::seed_seq bseq(seed_words.begin(), seed_words.end());
test_engine_with_sseq<boost::random::xoshiro128mm>(stdseq);
test_engine_with_sseq<boost::random::xoshiro128mm>(bseq);
// xoshiro256mm (4 x 64-bit state)
std::seed_seq stdseq2(seed_words.begin(), seed_words.end());
boost::random::seed_seq bseq2(seed_words.begin(), seed_words.end());
test_engine_with_sseq<boost::random::xoshiro256mm>(stdseq2);
test_engine_with_sseq<boost::random::xoshiro256mm>(bseq2);
return boost::report_errors();
}
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