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libcxx_old/test/std/numerics/rand/rand.eng/rand.eng.sub/io.pass.cpp

67 lines
1.5 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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 charT, class traits,
// class UIntType, size_t w, size_t s, size_t r>
// basic_ostream<charT, traits>&
// operator<<(basic_ostream<charT, traits>& os,
// const subtract_with_carry_engine<UIntType, w, s, r>& x);
//
// template <class charT, class traits,
// class UIntType, size_t w, size_t s, size_t r>
// basic_istream<charT, traits>&
// operator>>(basic_istream<charT, traits>& is,
// subtract_with_carry_engine<UIntType, w, s, r>& x);
#include <random>
#include <sstream>
#include <cassert>
#include "test_macros.h"
void
test1()
{
typedef std::ranlux24_base E;
E e1;
e1.discard(100);
std::ostringstream os;
os << e1;
std::istringstream is(os.str());
E e2;
is >> e2;
assert(e1 == e2);
}
void
test2()
{
typedef std::ranlux48_base E;
E e1;
e1.discard(100);
std::ostringstream os;
os << e1;
std::istringstream is(os.str());
E e2;
is >> e2;
assert(e1 == e2);
}
int main(int, char**)
{
test1();
test2();
return 0;
}