intoa.c

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    1 /*      $NetBSD: intoa.c,v 1.1 1999/05/07 14:49:52 drochner Exp $       */
    2 
    3 /*
    4  * Copyright (c) 1992 Regents of the University of California.
    5  * All rights reserved.
    6  *
    7  * This software was developed by the Computer Systems Engineering group
    8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
    9  * contributed to Berkeley.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by the University of
   22  *      California, Lawrence Berkeley Laboratory and its contributors.
   23  * 4. Neither the name of the University nor the names of its contributors
   24  *    may be used to endorse or promote products derived from this software
   25  *    without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   37  * SUCH DAMAGE.
   38  *
   39  * @(#) Header: net.c,v 1.9 93/08/06 19:32:15 leres Exp  (LBL)
   40  */
   41 
   42 #include <sys/types.h>
   43 
   44 #if defined(_KERNEL) || defined(_STANDALONE)
   45 #include <lib/libkern/libkern.h>
   46 #else
   47 char *intoa __P((u_int32_t)); /* XXX */
   48 #endif
   49 
   50 /* Similar to inet_ntoa() */
   51 char *
   52 intoa(addr)
   53         u_int32_t addr;
   54 {
   55         char *cp;
   56         u_int byte;
   57         int n;
   58         static char buf[17];    /* strlen(".255.255.255.255") + 1 */
   59 
   60         addr = ntohl(addr);
   61         cp = &buf[sizeof buf];
   62         *--cp = '\0';
   63 
   64         n = 4;
   65         do {
   66                 byte = addr & 0xff;
   67                 *--cp = byte % 10 + '';
   68                 byte /= 10;
   69                 if (byte > 0) {
   70                         *--cp = byte % 10 + '';
   71                         byte /= 10;
   72                         if (byte > 0)
   73                                 *--cp = byte + '';
   74                 }
   75                 *--cp = '.';
   76                 addr >>= 8;
   77         } while (--n > 0);
   78 
   79         return (cp+1);
   80 }

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FreeBSD/Linux Kernel Cross Reference sys/lib/libkern/intoa.c

FreeBSD/Linux Kernel Cross Reference
sys/lib/libkern/intoa.c