xref: /llvm-project-15.0.7/libcxx/test/std/numerics/rand/rand.eng/rand.eng.sub/ctor_sseq.pass.cpp (revision a7f9895c)

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <random>

// template<class UIntType, size_t w, size_t s, size_t r>
// class subtract_with_carry_engine;

// template<class Sseq> explicit subtract_with_carry_engine(Sseq& q);

// Serializing/deserializing the state of the RNG requires iostreams
// UNSUPPORTED: no-localization

#include <random>
#include <sstream>
#include <cassert>

#include "test_macros.h"

void
test1()
{
    const char* a = "13604817 711567 9760686 13278398 3323440 175548 5553651 "
    "3028863 10748297 2216688 275779 14778841 14438394 9483441 4229545 "
    "14657301 12636508 15978210 1653340 1718567 9272421 14302862 7940348 "
    "889045 0";
    unsigned as[] = {3, 5, 7};
    std::seed_seq sseq(as, as+3);
    std::ranlux24_base e1(sseq);
    std::ostringstream os;
    os << e1;
    assert(os.str() == a);
}

void
test2()
{
    const char* a = "241408498702289 172342669275054 191026374555184 "
    "61020585639411 231929771458953 142769679250755 198672786411514 "
    "183712717244841 227473912549724 62843577252444 68782400568421 "
    "159248704678140 0";
    unsigned as[] = {3, 5, 7};
    std::seed_seq sseq(as, as+3);
    std::ranlux48_base e1(sseq);
    std::ostringstream os;
    os << e1;
    assert(os.str() == a);
}

int main(int, char**)
{
    test1();
    test2();

  return 0;
}