diff options
Diffstat (limited to 'compat/macros.hpp')
| -rw-r--r-- | compat/macros.hpp | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/compat/macros.hpp b/compat/macros.hpp index abe89c73..8b635201 100644 --- a/compat/macros.hpp +++ b/compat/macros.hpp @@ -51,9 +51,18 @@ # define PP_CAT1(x,y) x##y #endif +#define once_only(...) do { static bool once__ = false; if (!once__) { once__ = true; __VA_ARGS__; } } while(false) + #if defined __cplusplus -// from now only C++ macros +// from now only C++ + +#include <type_traits> + +template<typename t> +using cv_qualified = std::conditional_t<std::is_fundamental_v<std::decay_t<t>>, + std::decay_t<t>, + std::add_lvalue_reference_t<std::add_const_t<std::remove_reference_t<t>>>>; template<bool> [[deprecated]] constexpr force_inline void static_warn() {} @@ -70,4 +79,3 @@ constexpr force_inline void static_warn<true>() {} // end c++-only macros #endif -#define once_only(...) do { static bool once__ = false; if (!once__) { once__ = true; __VA_ARGS__; } } while(false) |