in src/include/m/utility/utility.h [39:48]
constexpr std::strong_ordering operator<=>(T l, std::underlying_type_t<T> r) \
{ \
if (std::to_underlying(l) < r) \
return std::strong_ordering::less; \
\
if (std::to_underlying(l) > r) \
return std::strong_ordering::greater; \
\
return std::strong_ordering::equivalent; \
} \