| // { dg-options "-std=gnu++2a" } | |
| // { dg-do preprocess { target c++2a } } | |
| #include <version> | |
| #ifndef __cpp_lib_interpolate | |
| # error "Feature-test macro for midpoint and lerp missing in <version>" | |
| #elif __cpp_lib_interpolate != 201902L | |
| # error "Feature-test macro for midpoint and lerp has wrong value in <version>" | |
| #endif |