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Add array_lt_test_cx.cpp

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This commit is contained in:
Peter Dimov
2025-01-25 20:32:38 +02:00
parent a211468866
commit 5c05254afb
3 changed files with 84 additions and 2 deletions
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11
include/boost/array.hpp
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@ -337,8 +337,15 @@ namespace boost {
} }
template<class T, std::size_t N> template<class T, std::size_t N>
BOOST_CXX14_CONSTEXPR bool operator< (const array<T,N>& x, const array<T,N>& y) { BOOST_CXX14_CONSTEXPR bool operator< (const array<T,N>& x, const array<T,N>& y)
return std::lexicographical_compare(x.begin(),x.end(),y.begin(),y.end()); {
for( std::size_t i = 0; i < N; ++i )
{
if( x[ i ] < y[ i ] ) return true;
if( y[ i ] < x[ i ] ) return false;
}
return false;
} }
template<class T, std::size_t N> template<class T, std::size_t N>

1
test/Jamfile.v2
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@ -59,6 +59,7 @@ compile array_access_test_cx.cpp ;
# C++14 constexpr # C++14 constexpr
compile array_eq_test_cx.cpp ; compile array_eq_test_cx.cpp ;
compile array_lt_test_cx.cpp ;
# #

74
test/array_lt_test_cx.cpp Normal file
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@ -0,0 +1,74 @@
// 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> void test1()
{
constexpr boost::array<T, N> a1 = {};
constexpr boost::array<T, N> a2 = {};
STATIC_ASSERT( !( a1 < a2 ) );
STATIC_ASSERT( !( a1 > a2 ) );
STATIC_ASSERT( a1 <= a2 );
STATIC_ASSERT( a1 >= a2 );
}
template<class T> void test2()
{
{
constexpr boost::array<T, 4> a1 = {{ 1, 2, 3, 4 }};
constexpr boost::array<T, 4> a2 = {{ 1, 2, 3, 4 }};
STATIC_ASSERT( !( a1 < a2 ) );
STATIC_ASSERT( !( a1 > a2 ) );
STATIC_ASSERT( a1 <= a2 );
STATIC_ASSERT( a1 >= a2 );
}
{
constexpr boost::array<T, 4> a1 = {{ 1, 2, 3, 4 }};
constexpr boost::array<T, 4> a2 = {{ 1, 2, 3, 5 }};
STATIC_ASSERT( a1 < a2 );
STATIC_ASSERT( !( a1 > a2 ) );
STATIC_ASSERT( a1 <= a2 );
STATIC_ASSERT( !( a1 >= a2 ) );
}
{
constexpr boost::array<T, 4> a1 = {{ 1, 2, 3, 4 }};
constexpr boost::array<T, 4> a2 = {{ 1, 2, 3, 2 }};
STATIC_ASSERT( !( a1 < a2 ) );
STATIC_ASSERT( a1 > a2 );
STATIC_ASSERT( !( a1 <= a2 ) );
STATIC_ASSERT( a1 >= a2 );
}
}
int main()
{
test1<int, 0>();
test1<int, 1>();
test1<int, 7>();
test2<int>();
}
#endif