debian man page for fmt_ip6if

fmt_ip6if(3)						     Library Functions Manual						      fmt_ip6if(3)

NAME
       fmt_ip6if - write a formatted ASCII representation of an IPv6 number

SYNTAX
       #include <ip6.h>

       unsigned int fmt_ip6if(char *dest,const char ip[16],uint32 scope_id);

DESCRIPTION
       fmt_ip6if formats an IPv6 number in ASCII representation from ip and writes the result into dest. It returns the number of bytes written.

       fmt_ip6if will apply "::" compression to the output.

       If ip is an IPv4-mapped IPv6 address, fmt_ip6if will output the last 4 bytes as IPv4 number in dotted-decimal notation.

       If dest equals FMT_LEN (i.e. is zero), fmt_ip6if returns the number of bytes it would have written.

       fmt_ip6 does not append .

       ip6.h  defines  the  integer IP6_FMT to be big enough to contain every possible fmt_ip6 output plus .	However, for fmt_ip6if you need to
       add 1 for the '%' and IF_NAMESIZE from <net/if.h> for the interface name.

EXAMPLE
       #include <ip6.h>

	 char buf[IP6_FMT];
	 char ip[16];
	 scope_id sid;
	 buf[fmt_ip6if(buf,ip,sid)]=0;

SEE ALSO
       scan_ip6(3), fmt_ip4(3)

																      fmt_ip6if(3)