* Copyright (c) 1983 Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
static char sccsid
[] = "@(#)lookup.c 5.5 (Berkeley) 2/6/91";
* look up an address in a sorted-by-address namelist
* this deals with misses by mapping them to the next lower
for ( low
= 0 , high
= nname
- 1 ; low
!= high
; ) {
middle
= ( high
+ low
) >> 1;
if ( nl
[ middle
].value
<= address
&& nl
[ middle
+1 ].value
> address
) {
if ( debug
& LOOKUPDEBUG
) {
printf( "[nllookup] %d (%d) probes\n" , probes
, nname
-1 );
if ( nl
[ middle
].value
> address
) {
fprintf( stderr
, "[nllookup] binary search fails???\n" );
arclookup( parentp
, childp
)
if ( parentp
== 0 || childp
== 0 ) {
fprintf( stderr
, "[arclookup] parentp == 0 || childp == 0\n" );
if ( debug
& LOOKUPDEBUG
) {
printf( "[arclookup] parent %s child %s\n" ,
parentp
-> name
, childp
-> name
);
for ( arcp
= parentp
-> children
; arcp
; arcp
= arcp
-> arc_childlist
) {
if ( debug
& LOOKUPDEBUG
) {
printf( "[arclookup]\t arc_parent %s arc_child %s\n" ,
arcp
-> arc_parentp
-> name
,
arcp
-> arc_childp
-> name
);
if ( arcp
-> arc_childp
== childp
) {