94     BOOST_HOF_PLACEHOLDER_TEST_CONSTEXPR auto f_subtract = boost::hof::_1 - boost::hof::_2;  in BOOST_HOF_TEST_CASE()  local
96     static_assert(std::is_copy_constructible<decltype(f_subtract)>::value, "Not copyable");  in BOOST_HOF_TEST_CASE()
98 …static_assert(boost::hof::detail::is_default_constructible<decltype(f_subtract)>::value, "Not defa…  in BOOST_HOF_TEST_CASE()
99     PLACEHOLDER_CHECK(f_subtract(2, 1) == x_subtract);  in BOOST_HOF_TEST_CASE()
317     BOOST_HOF_PLACEHOLDER_TEST_CONSTEXPR auto f_subtract = boost::hof::_ - boost::hof::_;  in BOOST_HOF_TEST_CASE()  local
319     static_assert(std::is_copy_constructible<decltype(f_subtract)>::value, "Not copyable");  in BOOST_HOF_TEST_CASE()
321 …static_assert(boost::hof::detail::is_default_constructible<decltype(f_subtract)>::value, "Not defa…  in BOOST_HOF_TEST_CASE()
322     PLACEHOLDER_CHECK(f_subtract(2, 1) == x_subtract);  in BOOST_HOF_TEST_CASE()
464     BOOST_HOF_PLACEHOLDER_TEST_CONSTEXPR auto f_subtract = 2 - boost::hof::_;  in BOOST_HOF_TEST_CASE()  local
466     static_assert(std::is_copy_constructible<decltype(f_subtract)>::value, "Not copyable");  in BOOST_HOF_TEST_CASE()
468 …static_assert(!boost::hof::detail::is_default_constructible<decltype(f_subtract)>::value, "default…  in BOOST_HOF_TEST_CASE()
469     PLACEHOLDER_CHECK(f_subtract(1) == x_subtract);  in BOOST_HOF_TEST_CASE()
611     BOOST_HOF_PLACEHOLDER_TEST_CONSTEXPR auto f_subtract = boost::hof::_ - 1;  in BOOST_HOF_TEST_CASE()  local
613     static_assert(std::is_copy_constructible<decltype(f_subtract)>::value, "Not copyable");  in BOOST_HOF_TEST_CASE()
615 …static_assert(!boost::hof::detail::is_default_constructible<decltype(f_subtract)>::value, "default…  in BOOST_HOF_TEST_CASE()
616     PLACEHOLDER_CHECK(f_subtract(2) == x_subtract);  in BOOST_HOF_TEST_CASE()