add missing IN6_ARE_ADDR_EQUAL

[musl] / include / netinet / in.h

diff --git a/include/netinet/in.h b/include/netinet/in.h
index cae16c7..509640b 100644 (file)
--- a/include/netinet/in.h
+++ b/include/netinet/in.h
@@ -27,10 +27,12 @@ struct in6_addr
 {
        union {
                uint8_t __s6_addr[16];
+               uint16_t __s6_addr16[8];
                uint32_t __s6_addr32[4];
        } __in6_union;
 };
 #define s6_addr __in6_union.__s6_addr
+#define s6_addr16 __in6_union.__s6_addr16
 #define s6_addr32 __in6_union.__s6_addr32
 
 struct sockaddr_in6
@@ -136,6 +138,11 @@ uint16_t ntohs(uint16_t);
 #define IN6_IS_ADDR_MC_GLOBAL(a) \
         (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0xe))
 
+#define __ARE_4_EQUAL(a,b) \
+       (!( 0[a]-0[b] | 1[a]-1[b] | 2[a]-2[b] | 3[a]-3[b] ))
+#define IN6_ARE_ADDR_EQUAL(a,b) \
+       __ARE_4_EQUAL((const uint32_t *)(a), (const uint32_t *)(b))
+
 #define        IN_CLASSA(a)            ((((in_addr_t)(a)) & 0x80000000) == 0)
 #define        IN_CLASSA_NET           0xff000000
 #define        IN_CLASSA_NSHIFT        24