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Arithmetic operators (note: priority to unfeasibility)

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Johann Dreo 2010-10-22 10:07:09 +02:00
commit 11b14cf597
1 changed files with 42 additions and 1 deletions
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43
eo/src/eoDualFitness.h
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@ -143,6 +143,48 @@ public:
public: public:
//! Add a given fitness to the current one
template <class F, class Cmp>
friend
eoDualFitness<F,Cmp> & operator+=( eoDualFitness<F,Cmp> & from, const eoDualFitness<F,Cmp> & that )
{
from._value += that._value;
// true only if the two are feasible, else false
from._is_feasible = from._is_feasible && that._is_feasible;
return from;
}
//! Substract a given fitness to the current one
template <class F, class Cmp>
friend
eoDualFitness<F,Cmp> & operator-=( eoDualFitness<F,Cmp> & from, const eoDualFitness<F,Cmp> & that )
{
from._value -= that._value;
// true only if the two are feasible, else false
from._is_feasible = from._is_feasible && that._is_feasible;
return from;
}
// Add this fitness's value to that other, and return a _new_ instance with the result.
template <class F, class Cmp>
eoDualFitness<F,Cmp> operator+(const eoDualFitness<F,Cmp> & that)
{
eoDualFitness<F,Cmp> from( *this );
return from += that;
}
// Add this fitness's value to that other, and return a _new_ instance with the result.
template <class F, class Cmp>
eoDualFitness<F,Cmp> operator-(const eoDualFitness<F,Cmp> & that)
{
eoDualFitness<F,Cmp> from( *this );
return from -= that;
}
//! Print an eoDualFitness instance as a pair of numbers, separated by a space //! Print an eoDualFitness instance as a pair of numbers, separated by a space
template <class F, class Cmp> template <class F, class Cmp>
friend friend
@ -166,7 +208,6 @@ public:
f = std::make_pair<F,bool>( value, feasible ); f = std::make_pair<F,bool>( value, feasible );
return is; return is;
} }
}; };
//! Compare dual fitnesses as if we were maximizing //! Compare dual fitnesses as if we were maximizing