test/dim_test.cc
author Peter Kovacs <kpeter@inf.elte.hu>
Tue, 15 Mar 2011 19:32:21 +0100
changeset 936 ddd3c0d3d9bf
parent 253 dbe309b5e855
permissions -rw-r--r--
Implement the scaling Price Refinement heuristic in CostScaling (#417)
instead of Early Termination.

These two heuristics are similar, but the newer one is faster
and not only makes it possible to skip some epsilon phases, but
it can improve the performance of the other phases, as well.
     1 /* -*- mode: C++; indent-tabs-mode: nil; -*-
     2  *
     3  * This file is a part of LEMON, a generic C++ optimization library.
     4  *
     5  * Copyright (C) 2003-2009
     6  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
     7  * (Egervary Research Group on Combinatorial Optimization, EGRES).
     8  *
     9  * Permission to use, modify and distribute this software is granted
    10  * provided that this copyright notice appears in all copies. For
    11  * precise terms see the accompanying LICENSE file.
    12  *
    13  * This software is provided "AS IS" with no warranty of any kind,
    14  * express or implied, and with no claim as to its suitability for any
    15  * purpose.
    16  *
    17  */
    18 
    19 #include <lemon/dim2.h>
    20 #include <iostream>
    21 #include "test_tools.h"
    22 
    23 using namespace std;
    24 using namespace lemon;
    25 
    26 int main()
    27 {
    28   typedef dim2::Point<int> Point;
    29 
    30   Point p;
    31   check(p.size()==2, "Wrong dim2::Point initialization.");
    32 
    33   Point a(1,2);
    34   Point b(3,4);
    35   check(a[0]==1 && a[1]==2, "Wrong dim2::Point initialization.");
    36 
    37   p = a+b;
    38   check(p.x==4 && p.y==6, "Wrong dim2::Point addition.");
    39 
    40   p = a-b;
    41   check(p.x==-2 && p.y==-2, "Wrong dim2::Point subtraction.");
    42 
    43   check(a.normSquare()==5,"Wrong dim2::Point norm calculation.");
    44   check(a*b==11, "Wrong dim2::Point scalar product.");
    45 
    46   int l=2;
    47   p = a*l;
    48   check(p.x==2 && p.y==4, "Wrong dim2::Point multiplication by a scalar.");
    49 
    50   p = b/l;
    51   check(p.x==1 && p.y==2, "Wrong dim2::Point division by a scalar.");
    52 
    53   typedef dim2::Box<int> Box;
    54   Box box1;
    55   check(box1.empty(), "Wrong empty() in dim2::Box.");
    56 
    57   box1.add(a);
    58   check(!box1.empty(), "Wrong empty() in dim2::Box.");
    59   box1.add(b);
    60 
    61   check(box1.left()==1 && box1.bottom()==2 &&
    62         box1.right()==3 && box1.top()==4,
    63         "Wrong addition of points to dim2::Box.");
    64 
    65   check(box1.inside(Point(2,3)), "Wrong inside() in dim2::Box.");
    66   check(box1.inside(Point(1,3)), "Wrong inside() in dim2::Box.");
    67   check(!box1.inside(Point(0,3)), "Wrong inside() in dim2::Box.");
    68 
    69   Box box2(Point(2,2));
    70   check(!box2.empty(), "Wrong empty() in dim2::Box.");
    71 
    72   box2.bottomLeft(Point(2,0));
    73   box2.topRight(Point(5,3));
    74   Box box3 = box1 & box2;
    75   check(!box3.empty() &&
    76         box3.left()==2 && box3.bottom()==2 &&
    77         box3.right()==3 && box3.top()==3,
    78         "Wrong intersection of two dim2::Box objects.");
    79 
    80   box1.add(box2);
    81   check(!box1.empty() &&
    82         box1.left()==1 && box1.bottom()==0 &&
    83         box1.right()==5 && box1.top()==4,
    84         "Wrong addition of two dim2::Box objects.");
    85 
    86   return 0;
    87 }