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[meta] Rewrite is_cr_convertible

This commit is contained in:
Behdad Esfahbod 2019-05-10 20:17:30 -07:00
parent b4ad6af9c4
commit c3a456a26e
1 changed files with 5 additions and 8 deletions
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9
src/hb-meta.hh
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@ -162,14 +162,11 @@ using hb_is_base_of = hb_is_convertible<hb_decay<Derived> *, hb_decay<Base> *>;
#define hb_is_base_of(Base,Derived) hb_is_base_of<Base, Derived>::value #define hb_is_base_of(Base,Derived) hb_is_base_of<Base, Derived>::value
template <typename From, typename To> template <typename From, typename To>
struct hb_is_cr_convertible using hb_is_cr_convertible = hb_bool_constant<
{
public:
static constexpr bool value =
hb_is_same (hb_decay<From>, hb_decay<To>) && hb_is_same (hb_decay<From>, hb_decay<To>) &&
(!hb_is_const (From) || hb_is_const (To)) && (!hb_is_const (From) || hb_is_const (To)) &&
(!hb_is_reference (To) || hb_is_const (To) || hb_is_reference (To)); (!hb_is_reference (To) || hb_is_const (To) || hb_is_reference (To))
}; >;
#define hb_is_cr_convertible(From,To) hb_is_cr_convertible<From, To>::value #define hb_is_cr_convertible(From,To) hb_is_cr_convertible<From, To>::value
/* std::move and std::forward */ /* std::move and std::forward */