__cpp_lib_three_way_comparison 201907L [C++20]
*/
#include <compare>
#include "test_macros.h"
#if TEST_STD_VER < 14
# ifdef __cpp_lib_three_way_comparison
# error "__cpp_lib_three_way_comparison should not be defined before c++20"
# endif
#elif TEST_STD_VER == 14
# ifdef __cpp_lib_three_way_comparison
# error "__cpp_lib_three_way_comparison should not be defined before c++20"
# endif
#elif TEST_STD_VER == 17
# ifdef __cpp_lib_three_way_comparison
# error "__cpp_lib_three_way_comparison should not be defined before c++20"
# endif
#elif TEST_STD_VER == 20
# ifndef __cpp_lib_three_way_comparison
# error "__cpp_lib_three_way_comparison should be defined in c++20"
# endif
# if __cpp_lib_three_way_comparison != 201907L
# error "__cpp_lib_three_way_comparison should have the value 201907L in c++20"
# endif
#elif TEST_STD_VER == 23
# ifndef __cpp_lib_three_way_comparison
# error "__cpp_lib_three_way_comparison should be defined in c++23"
# endif
# if __cpp_lib_three_way_comparison != 201907L
# error "__cpp_lib_three_way_comparison should have the value 201907L in c++23"
# endif
#elif TEST_STD_VER > 23
# ifndef __cpp_lib_three_way_comparison
# error "__cpp_lib_three_way_comparison should be defined in c++26"
# endif
# if __cpp_lib_three_way_comparison != 201907L
# error "__cpp_lib_three_way_comparison should have the value 201907L in c++26"
# endif
#endif