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// Range v3 library
//
// Copyright Eric Niebler 2014
//
// Use, modification and distribution is subject to 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)
//
// Project home: https://github.com/ericniebler/range-v3
#include <range/v3/algorithm/copy_if.hpp>
#include "../array.hpp"
#include "../simple_test.hpp"
constexpr bool is_even(int i)
{
return i % 2 == 0;
}
constexpr bool test_constexpr()
{
using namespace ranges;
test::array<int, 4> a{{1, 2, 3, 4}};
test::array<int, 4> b{{0, 0, 0, 0}};
const auto res = copy_if(a, ranges::begin(b), is_even);
STATIC_CHECK_RETURN(res.in == end(a));
STATIC_CHECK_RETURN(res.out == begin(b) + 2);
STATIC_CHECK_RETURN(a[0] == 1);
STATIC_CHECK_RETURN(a[1] == 2);
STATIC_CHECK_RETURN(a[2] == 3);
STATIC_CHECK_RETURN(a[3] == 4);
STATIC_CHECK_RETURN(b[0] == 2);
STATIC_CHECK_RETURN(b[1] == 4);
STATIC_CHECK_RETURN(b[2] == 0);
STATIC_CHECK_RETURN(b[3] == 0);
return true;
}
int main()
{
STATIC_CHECK(test_constexpr());
return test_result();
}
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