Function _PCTRIE_VAL2PTR

freebsd/sys/pctrie.h:61–69

CTASSERT((__offsetof(struct type, field) & (sizeof(uint32_t) - 1)) == 0); \
									\
static __inline struct type *						\
name##_PCTRIE_VAL2PTR(uint64_t *val)					\
{									\
									\
	if (val == NULL)						\
		return (NULL);						\
	return (struct type *)						\
	    ((uintptr_t)val - __offsetof(struct type, field));		\
}									\
									\
static __inline uint64_t *						\
name##_PCTRIE_PTR2VAL(struct type *ptr)					\