1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// Copyright 2025 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/array.hpp>
#include <boost/config.hpp>
#include <boost/config/pragma_message.hpp>
#include <boost/config/workaround.hpp>
#include <cstddef>
#if defined(BOOST_NO_CXX14_CONSTEXPR)
BOOST_PRAGMA_MESSAGE("Test skipped because BOOST_NO_CXX14_CONSTEXPR is defined")
#else
#define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
template<class T, std::size_t N> constexpr boost::array<T, N> modified( boost::array<T, N> a1 )
{
a1.front() = 1;
a1[ 1 ] = 2;
a1.at( 2 ) = 3;
a1.back() = 4;
return a1;
}
template<class T> void test1()
{
constexpr boost::array<T, 4> a1 = {};
constexpr boost::array<T, 4> a2 = modified( a1 );
STATIC_ASSERT( a2[0] == 1 );
STATIC_ASSERT( a2[1] == 2 );
STATIC_ASSERT( a2[2] == 3 );
STATIC_ASSERT( a2[3] == 4 );
}
int main()
{
test1<int>();
}
#endif
|
