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// { dg-do run { target c++11 } }
// Copyright (C) 2010-2022 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// C++11 26.6.10 valarray range access: [valarray.range]
#include <valarray>
void
test01()
{
std::valarray<double> va{1.0, 2.0, 3.0};
(void) std::begin(va);
(void) std::end(va);
const auto& cva = va;
(void) std::begin(cva);
(void) std::end(cva);
using Iter = decltype(std::begin(va));
using IterTraits = std::iterator_traits<Iter>;
static_assert( std::is_same<Iter, decltype(std::end(va))>::value, "" );
static_assert( std::is_same<IterTraits::iterator_category,
std::random_access_iterator_tag>::value, "" );
static_assert( std::is_same<IterTraits::value_type, double>::value, "" );
static_assert( std::is_same<IterTraits::reference, double&>::value, "" );
using CIter = decltype(std::begin(cva));
using CIterTraits = std::iterator_traits<CIter>;
static_assert( std::is_same<CIter, decltype(std::end(cva))>::value, "" );
static_assert( std::is_same<CIterTraits::iterator_category,
std::random_access_iterator_tag>::value, "" );
static_assert( std::is_same<CIterTraits::value_type, double>::value, "" );
static_assert( std::is_same<CIterTraits::reference, const double&>::value, "" );
#if __cplusplus >= 202002L
static_assert( std::contiguous_iterator<Iter> );
static_assert( std::contiguous_iterator<CIter> );
#endif
}
// PR libstdc++/103022
void
test02()
{
std::valarray<double> va;
(void) std::begin(va);
(void) std::end(va);
const auto& cva = va;
(void) std::begin(cva);
(void) std::end(cva);
}
int main()
{
test01();
test02();
}
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