| fmt_ip4(3) | Library Functions Manual | fmt_ip4(3) |
fmt_ip4 - write a formatted ASCII representation of an IPv4 number
#include <ip4.h>
unsigned int fmt_ip4(char *dest,const char ip[4]);
fmt_ip4 formats an IPv4 number in dotted-decimal ASCII representation from ip and writes the result into dest. It returns the number of bytes written.
If dest equals FMT_LEN (i.e. is zero), fmt_ip4 returns the number of bytes it would have written.
fmt_ip4 does not append \0.
For convenience, ip4.h defines the integer IP4_FMT to be big enough to contain every possible fmt_ip4 output plus \0.
#include <ip4.h>
char buf[IP4_FMT];
char ip[4];
buf[fmt_ip4(buf,ip)]=0;