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Factor: improve factor multiplication

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Pass the argument as reference-to-const and also allow chaining of multiplications.
This commit is contained in:
Tiago Gomes 2013-03-21 21:49:12 +00:00
parent 6da2580c8f
commit a2e54a235a
4 changed files with 11 additions and 8 deletions
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8
packages/CLPBN/horus/Factor.cpp
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@ -91,14 +91,16 @@ Factor::sumOutAllExceptIndex (size_t idx)
}
void
Factor::multiply (Factor& g)
Factor&
Factor::multiply (const Factor& g)
{
if (args_.empty()) {
*this = g;
operator= (g);
} else {
GenericFactor<VarId>::multiply (g);
}
return *this;
}

2
packages/CLPBN/horus/Factor.h
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@ -30,7 +30,7 @@ class Factor : public GenericFactor<VarId> {
void sumOutAllExceptIndex (size_t idx);
void multiply (Factor&);
Factor& multiply (const Factor&);
std::string getLabel() const;

7
packages/CLPBN/horus/GenericFactor.cpp
View File

@ -82,15 +82,15 @@ GenericFactor<T>::operator[] (size_t idx)
template <typename T> void
GenericFactor<T>::multiply (GenericFactor<T>& g)
template <typename T> GenericFactor<T>&
GenericFactor<T>::multiply (const GenericFactor<T>& g)
{
if (args_ == g.arguments()) {
// optimization
Globals::logDomain
? params_ += g.params()
: params_ *= g.params();
return;
return *this;
}
unsigned range_prod = 1;
bool share_arguments = false;
@ -124,6 +124,7 @@ GenericFactor<T>::multiply (GenericFactor<T>& g)
}
}
}
return *this;
}

2
packages/CLPBN/horus/GenericFactor.h
View File

@ -49,7 +49,7 @@ class GenericFactor {
double& operator[] (size_t idx);
void multiply (GenericFactor<T>& g);
GenericFactor<T>& multiply (const GenericFactor<T>& g);
void sumOutIndex (size_t idx);