#ifndef __irc_ipv6_H
#define __irc_ipv6_H
+#include <limits.h>
+
/* from res.h */
/** Structure to store an IP address. */
unsigned short port; /**< Port number, host-endian. */
};
+#define irc_bitlen(ADDR, BITS) (irc_in_addr_is_ipv4(ADDR) ? (BITS) - 96 : (BITS))
+
/** Evaluate to non-zero if \a ADDR is a valid address (not all 0s and not all 1s). */
#define irc_in_addr_valid(ADDR) (((ADDR)->in6_16[0] && ~(ADDR)->in6_16[0]) \
|| (ADDR)->in6_16[1] != (ADDR)->in6_16[0] \
|| (ADDR)->in6_16[7] != (ADDR)->in6_16[0])
/** Evaluate to non-zero if \a ADDR (of type struct irc_in_addr) is an IPv4 address. */
#define irc_in_addr_is_ipv4(ADDR) (!(ADDR)->in6_16[0] && !(ADDR)->in6_16[1] && !(ADDR)->in6_16[2] \
- && !(ADDR)->in6_16[3] && !(ADDR)->in6_16[4] && (ADDR)->in6_16[6] \
- && (!(ADDR)->in6_16[5] || (ADDR)->in6_16[5] == 65535))
+ && !(ADDR)->in6_16[3] && !(ADDR)->in6_16[4] && ((!(ADDR)->in6_16[5] \
+ && (ADDR)->in6_16[6]) || (ADDR)->in6_16[5] == 65535))
/** Evaluate to non-zero if \a A is a different IP than \a B. */
#define irc_in_addr_cmp(A,B) (irc_in_addr_is_ipv4(A) ? ((A)->in6_16[6] != (B)->in6_16[6] \
|| (A)->in6_16[7] != (B)->in6_16[7] || !irc_in_addr_is_ipv4(B)) \