linearApproximationPolicy.h

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#ifndef GUM_LINEAR_APPROXIMATION_POLICY_H
#define GUM_LINEAR_APPROXIMATION_POLICY_H
 
#include <typeinfo>
 
#include <agrum/agrum.h>
 
#include <agrum/base/core/approximations/approximationPolicy.h>
 
namespace gum {

  template < typename GUM_SCALAR >
  class LinearApproximationPolicy: public virtual ApproximationPolicy< GUM_SCALAR > {
    public:
    // ===========================================================================
    // ===========================================================================

    LinearApproximationPolicy(GUM_SCALAR low  = (GUM_SCALAR)0.0,
                              GUM_SCALAR high = (GUM_SCALAR)1.0,
                              GUM_SCALAR eps  = (GUM_SCALAR)0.1);

    LinearApproximationPolicy(const LinearApproximationPolicy< GUM_SCALAR >* md);

 
    // ===========================================================================
    // ===========================================================================

    GUM_SCALAR fromExact(const GUM_SCALAR& value) const;

    void combineAdd(const ApproximationPolicy< GUM_SCALAR >* ap);

    void combineSub(const ApproximationPolicy< GUM_SCALAR >* ap);

    void combineMult(const ApproximationPolicy< GUM_SCALAR >* ap);

    void combineDiv(const ApproximationPolicy< GUM_SCALAR >* ap);

    void combineMax(const ApproximationPolicy< GUM_SCALAR >* ap);

    void combineMin(const ApproximationPolicy< GUM_SCALAR >* ap);

    GUM_SCALAR safeFromExact(const GUM_SCALAR& value);

    Idx encode(const GUM_SCALAR& value) const;

    GUM_SCALAR decode(Idx representation) const;

    virtual void setEpsilon(const GUM_SCALAR& e);

    virtual void setLimits(const GUM_SCALAR& newLowLimit, const GUM_SCALAR& newHighLimit);

    virtual void setLowLimit(const GUM_SCALAR& newLowLimit);

    const GUM_SCALAR& lowLimit() const;

    virtual void setHighLimit(const GUM_SCALAR& newHighLimit);

    const GUM_SCALAR& highLimit() const;
 
    protected:
    GUM_SCALAR lowLimit_;

    GUM_SCALAR highLimit_;

    GUM_SCALAR epsilon_;

    Idx _encode_(const GUM_SCALAR& value) const;

    GUM_SCALAR _decode_(const GUM_SCALAR& representation) const;

    void computeNbInterval_();

    Idx nbInterval_;
  };
}   // namespace gum
 
 
#ifndef GUM_NO_EXTERN_TEMPLATE_CLASS
extern template class gum::LinearApproximationPolicy< double >;
#endif
 
 
// Always inline template classes implementation.
#include <agrum/base/core/approximations/linearApproximationPolicy_tpl.h>
 
#endif /* GUM_LINEAR_APPROXIMATION_POLICY_H */