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[lwip-users] inet_ntoa implementation
From: |
Sergio PérezAlcañiz |
Subject: |
[lwip-users] inet_ntoa implementation |
Date: |
Fri, 11 Apr 2003 10:50:58 +0200 (CEST) |
User-agent: |
IMP/PHP IMAP webmail program 2.2.3 |
Hello, I'm using the porting of ares in my own lwip porting (RTLinux porting)
and I find very interesting to have a inet_ntoa implementation. Next lines are a
simple implementation for that.
Include in the file inet.h this line:
char *inet_ntoa(struct in_addr in);
and at the end of inet.c:
static unsigned int i2a(char* dest,unsigned int x) {
register unsigned int tmp=x;
register unsigned int len=0;
if (x>=100) { *dest++=tmp/100+'0'; tmp=tmp%100; ++len; }
if (x>=10) { *dest++=tmp/10+'0'; tmp=tmp%10; ++len; }
*dest++=tmp+'0';
return len+1;
}
char *inet_ntoa(struct in_addr in) {
static char buf[20];
unsigned int len;
unsigned char *ip=(unsigned char*)∈
len=i2a(buf,ip[0]); buf[len]='.'; ++len;
len+=i2a(buf+ len,ip[1]); buf[len]='.'; ++len;
len+=i2a(buf+ len,ip[2]); buf[len]='.'; ++len;
len+=i2a(buf+ len,ip[3]); buf[len]=0;
return buf;
}
I think that this is useful for everybody who uses the socket api.
Regards.
Sergio.
- [lwip-users] inet_ntoa implementation,
Sergio PérezAlcañiz <=