traverse.cpp
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- /*
- * ===========================================================================
- * PRODUCTION $Log: traverse.cpp,v $
- * PRODUCTION Revision 1000.1 2004/06/01 18:10:16 gouriano
- * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.2
- * PRODUCTION
- * ===========================================================================
- */
- /* $Id: traverse.cpp,v 1000.1 2004/06/01 18:10:16 gouriano Exp $
- * ===========================================================================
- *
- * PUBLIC DOMAIN NOTICE
- * National Center for Biotechnology Information
- *
- * This software/database is a "United States Government Work" under the
- * terms of the United States Copyright Act. It was written as part of
- * the author's official duties as a United States Government employee and
- * thus cannot be copyrighted. This software/database is freely available
- * to the public for use. The National Library of Medicine and the U.S.
- * Government have not placed any restriction on its use or reproduction.
- *
- * Although all reasonable efforts have been taken to ensure the accuracy
- * and reliability of the software and data, the NLM and the U.S.
- * Government do not and cannot warrant the performance or results that
- * may be obtained by using this software or data. The NLM and the U.S.
- * Government disclaim all warranties, express or implied, including
- * warranties of performance, merchantability or fitness for any particular
- * purpose.
- *
- * Please cite the author in any work or product based on this material.
- *
- * ===========================================================================
- *
- * Author: Richard Desper
- *
- * File Description: traverse.cpp
- *
- * A part of the Miminum Evolution algorithm
- *
- */
- #include <ncbi_pch.hpp>
- #include <stdio.h>
- #include <stdlib.h>
- #include <math.h>
- #include "graph.h"
- #include "fastme.h"
- BEGIN_NCBI_SCOPE
- BEGIN_SCOPE(fastme)
- meEdge *findBottomLeft(meEdge *e)
- /*findBottomLeft searches by gottom down in the meTree and to the left.*/
- {
- meEdge *f;
- f = e;
- while (NULL != f->head->leftEdge)
- f = f->head->leftEdge;
- return(f);
- }
-
- meEdge *moveRight(meEdge *e)
- {
- meEdge *f;
- f = e->tail->rightEdge; /*this step moves from a left-oriented edge
- to a right-oriented edge*/
- if (NULL != f)
- f = findBottomLeft(f);
- return(f);
- }
- meEdge *depthFirstTraverse(meTree *T, meEdge *e)
- /*depthFirstTraverse returns the meEdge f which is least in T according
- to the depth-first order, but which is later than e in the search
- pattern. If e is null, f is the least meEdge of T*/
- {
- meEdge *f;
- if (NULL == e)
- {
- f = T->root->leftEdge;
- if (NULL != f)
- f = findBottomLeft(f);
- return(f); /*this is the first meEdge of this search pattern*/
- }
- else /*e is non-null*/
- {
- if (e->tail->leftEdge == e)
- /*if e is a left-oriented edge, we skip the entire
- meTree cut below e, and find least edge*/
- f = moveRight(e);
- else /*if e is a right-oriented edge, we have already looked at its
- sibling and everything below e, so we move up*/
- f = e->tail->parentEdge;
- }
- return(f);
- }
-
- meEdge *moveUpRight(meEdge *e)
- {
- meEdge *f;
- f = e;
- while ((NULL != f) && ( f->tail->leftEdge != f))
- f = f->tail->parentEdge;
- /*go up the meTree until f is a leftEdge*/
- if (NULL == f)
- return(f); /*triggered at end of search*/
- else
- return(f->tail->rightEdge);
- /*and then go right*/
- }
-
- boolean leaf(meNode *v);
- meEdge *topFirstTraverse(meTree *T, meEdge *e)
- /*topFirstTraverse starts from the top of T, and from there moves stepwise
- down, left before right*/
- /*assumes meTree has been detrifurcated*/
- {
- meEdge *f;
- if (NULL == e)
- return(T->root->leftEdge); /*first Edge searched*/
- else if (!(leaf(e->head)))
- return(e->head->leftEdge); /*down and to the left is preferred*/
- else /*e->head is a leaf*/
- {
- f = moveUpRight(e);
- return(f);
- }
- }
- END_SCOPE(fastme)
- END_NCBI_SCOPE
- /*
- * ===========================================================================
- * $Log: traverse.cpp,v $
- * Revision 1000.1 2004/06/01 18:10:16 gouriano
- * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.2
- *
- * Revision 1.2 2004/05/21 21:41:04 gorelenk
- * Added PCH ncbi_pch.hpp
- *
- * Revision 1.1 2004/02/10 15:16:04 jcherry
- * Initial version
- *
- * ===========================================================================
- */