Function IsEmpty

layers/external/parallel_hashmap/phmap.h:343–343

inline ctrl_t H2(size_t hashval) { return (ctrl_t)(hashval & 0x7F); }

inline bool IsEmpty(ctrl_t c) { return c == kEmpty; }
inline bool IsFull(ctrl_t c) { return c >= static_cast<ctrl_t>(0); }
inline bool IsDeleted(ctrl_t c) { return c == kDeleted; }
inline bool IsEmptyOrDeleted(ctrl_t c) { return c < kSentinel; }