test/dim_test.cc
author Peter Kovacs <kpeter@inf.elte.hu>
Fri, 17 Apr 2009 18:04:36 +0200
changeset 609 e6927fe719e6
parent 253 dbe309b5e855
permissions -rw-r--r--
Support >= and <= constraints in NetworkSimplex (#219, #234)

By default the same inequality constraints are supported as by
Circulation (the GEQ form), but the LEQ form can also be selected
using the problemType() function.

The documentation of the min. cost flow module is reworked and
extended with important notes and explanations about the different
variants of the problem and about the dual solution and optimality
conditions.
     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 }