matlab_differential_entropy_normal.cpp

// Description: Differential entropy of a normal distribution
// DocumentationOf: differential_entropy_normal.m

#include "tim/corematlab/tim_matlab.h"

#include "tim/core/differential_entropy_normal.h"

void force_linking_differential_entropy_normal() {};

using namespace Tim;

namespace
{

    void matlabDifferentialEntropyNormal(
        int outputs, mxArray *outputSet[],
        int inputs, const mxArray *inputSet[])
    {
        enum Input
        {
            Dimension,
            CovarianceDeterminant,
            Inputs
        };

        enum Output
        {
            Entropy,
            Outputs
        };

        ENSURE_OP(inputs, ==, Inputs);
        ENSURE_OP(outputs, ==, Outputs);

        integer dimension = 
            matlabAsScalar<integer>(inputSet[Dimension]);
        dreal covarianceDeterminant = 
            matlabAsScalar<dreal>(inputSet[CovarianceDeterminant]);

        dreal* entropy = 
            matlabCreateScalar<dreal>(outputSet[Entropy]);
        *entropy = 
            differentialEntropyNormal<dreal>(dimension, covarianceDeterminant);
    }

    void addFunction()
    {
        matlabAddFunction(
            "differential_entropy_normal",
            matlabDifferentialEntropyNormal);
    }

    CallFunction run(addFunction);

}