1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that this notice is preserved and that due credit is given 7 * to the University of California at Berkeley. The name of the University 8 * may not be used to endorse or promote products derived from this 9 * software without specific prior written permission. This software 10 * is provided ``as is'' without express or implied warranty. 11 */ 12 13 #if defined(LIBC_SCCS) && !defined(lint) 14 static char sccsid[] = "@(#)inet_ntoa.c 5.3 (Berkeley) 03/07/88"; 15 #endif /* LIBC_SCCS and not lint */ 16 17 /* 18 * Convert network-format internet address 19 * to base 256 d.d.d.d representation. 20 */ 21 #include <sys/types.h> 22 #include <netinet/in.h> 23 24 char * 25 inet_ntoa(in) 26 struct in_addr in; 27 { 28 static char b[18]; 29 register char *p; 30 31 p = (char *)∈ 32 #define UC(b) (((int)b)&0xff) 33 sprintf(b, "%d.%d.%d.%d", UC(p[0]), UC(p[1]), UC(p[2]), UC(p[3])); 34 return (b); 35 } 36