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// { dg-do run { target c++20 } }
#include <compare>
#define assert(X) do { if (!(X)) __builtin_abort(); } while(0)
int main()
{
{
constexpr auto v = 1 <=> 2;
static_assert (__is_same_as (decltype (v), const std::strong_ordering));
static_assert (!is_eq (v));
static_assert (is_neq (v));
static_assert (is_lt (v));
static_assert (is_lteq (v));
static_assert (!is_gt (v));
static_assert (!is_gteq (v));
}
{
enum E { a = 0 };
constexpr auto v = E::a <=> 1;
static_assert (__is_same_as (decltype (v), const std::strong_ordering));
static_assert (!is_eq (v));
static_assert (is_neq (v));
static_assert (is_lt (v));
static_assert (is_lteq (v));
static_assert (!is_gt (v));
static_assert (!is_gteq (v));
}
{
enum class E { a, b };
constexpr auto v = E::a <=> E::b;
static_assert (__is_same_as (decltype (v), const std::strong_ordering));
static_assert (!is_eq (v));
static_assert (is_neq (v));
static_assert (is_lt (v));
static_assert (is_lteq (v));
static_assert (!is_gt (v));
static_assert (!is_gteq (v));
}
{
int ar[2];
constexpr auto v = &ar[1] <=> &ar[0];
static_assert (__is_same_as (decltype (v), const std::strong_ordering));
static_assert (!is_eq (v));
static_assert (is_neq (v));
static_assert (!is_lt (v));
static_assert (!is_lteq (v));
static_assert (is_gt (v));
static_assert (is_gteq (v));
}
{
constexpr auto v = 3.14 <=> 3.14;
static_assert (__is_same_as (decltype (v), const std::partial_ordering));
static_assert (is_eq (v));
static_assert (!is_neq (v));
static_assert (!is_lt (v));
static_assert (is_lteq (v));
static_assert (!is_gt (v));
static_assert (is_gteq (v));
}
}
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