34 #define IN6_IS_ADDR_UNSPECIFIED(a) \  argument
35   ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
36    (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
37    (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
38    (*(const uint32_t*)(&(a)->s6_addr[12]) == 0))
40 #define IN6_IS_ADDR_LOOPBACK(a) \  argument
41   ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
42    (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
43    (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
44    (*(const uint32_t*)(&(a)->s6_addr[12]) == ntohl(1)))
46 #define IN6_IS_ADDR_V4COMPAT(a) \  argument
47   ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
48    (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
49    (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
50    (*(const uint32_t*)(&(a)->s6_addr[12]) != 0) && \
51    (*(const uint32_t*)(&(a)->s6_addr[12]) != ntohl(1)))
53 #define IN6_IS_ADDR_V4MAPPED(a) \  argument
54   ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
55    (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
56    (*(const uint32_t*)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
58 #define __bionic_s6_addr(a) ((const uint8_t*)(a))  argument
60 #define IN6_IS_ADDR_LINKLOCAL(a) \  argument
61   ((__bionic_s6_addr(a)[0] == 0xfe) && ((__bionic_s6_addr(a)[1] & 0xc0) == 0x80))
63 #define IN6_IS_ADDR_SITELOCAL(a) \  argument
64   ((__bionic_s6_addr(a)[0] == 0xfe) && ((__bionic_s6_addr(a)[1] & 0xc0) == 0xc0))
66 #define IN6_IS_ADDR_MULTICAST(a) (__bionic_s6_addr(a)[0] == 0xff)  argument
68 #define IN6_IS_ADDR_ULA(a) ((__bionic_s6_addr(a)[0] & 0xfe) == 0xfc)  argument
77 #define IPV6_ADDR_MC_SCOPE(a) (__bionic_s6_addr(a)[1] & 0x0f)  argument
79 #define IN6_IS_ADDR_MC_NODELOCAL(a) \  argument
80   (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
81 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \  argument
82   (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
83 #define IN6_IS_ADDR_MC_SITELOCAL(a) \  argument
84   (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
85 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \  argument
86   (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
87 #define IN6_IS_ADDR_MC_GLOBAL(a) \  argument
88   (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
90 #define IN6_ARE_ADDR_EQUAL(a, b) \  argument
91   (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)