src/libs/linprog/Summand.cpp

   1 /*
   2  * Copyright 2007-2008, Christof Lutteroth, lutteroth@cs.auckland.ac.nz
   3  * Copyright 2007-2008, James Kim, jkim202@ec.auckland.ac.nz
   4  * Distributed under the terms of the MIT License.
   5  */
   6
   7 #include "LinearSpec.h"
   8 #include "Summand.h"
   9 #include "Variable.h"
  10
  11
  12 Summand::Summand(Summand* summand)
  13         :
  14         fCoeff(summand->Coeff()),
  15         fVar(summand->Var())
  16 {
  17 }
  18
  19
  20 Summand::Summand(double coeff, Variable* var)
  21         :
  22         fCoeff(coeff),
  23         fVar(var)
  24 {
  25 }
  26
  27
  28 Summand::~Summand()
  29 {
  30
  31 }
  32
  33
  34 /**
  35  * Gets the summmand's coefficient.
  36  *
  37  * @return the summand's coefficient
  38  */
  39 double
  40 Summand::Coeff()
  41 {
  42         return fCoeff;
  43 }
  44
  45
  46 /**
  47  * Sets the summmand's coefficient.
  48  *
  49  * @param coeff coefficient
  50  */
  51 void
  52 Summand::SetCoeff(double coeff)
  53 {
  54         fCoeff = coeff;
  55 }
  56
  57
  58 /**
  59  * Gets the summand's variable.
  60  *
  61  * @return the summand's variable
  62  */
  63 Variable*
  64 Summand::Var()
  65 {
  66         return fVar;
  67 }
  68
  69
  70 /**
  71  * Sets the summand's variable.
  72  *
  73  * @param var   variable
  74  */
  75 void
  76 Summand::SetVar(Variable* var)
  77 {
  78         fVar = var;
  79 }
  80
  81
  82 int32
  83 Summand::VariableIndex()
  84 {
  85         return fVar->Index();
  86 }