xref: /llvm-project-15.0.7/libcxx/test/std/numerics/complex.number/complex.ops/stream_output.pass.cpp (revision aa0b991d)

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// <complex>

// template<class T, class charT, class traits>
//   basic_ostream<charT, traits>&
//   operator<<(basic_ostream<charT, traits>& o, const complex<T>& x);

#include <complex>
#include <sstream>
#include <cassert>

#include "test_macros.h"

int main(int, char**)
{
    {
        std::complex<double> c(1, 2);
        std::ostringstream os;
        os << c;
        assert(os.str() == "(1,2)");
    }
    {
        std::complex<double> c(1, 2);
        std::ostringstream os;
        os.width(8);
        os.fill('_');
        os << c;
        assert(os.str() == "___(1,2)");
    }

  return 0;
}