Revision 595 trunk/contrib/statslib/dnbinom.cpp

dnbinom.cpp (revision 595)
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	RETURN_ARRAYS_DECREMENT();
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	return(-loglike);
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}
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///** negative log likelihood of negative binomial with mean and size 
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//\brief Negative binomial with size and mean
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//\author Mollie Brooks
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//\param x observed count
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//\param mu is the predicted mean
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//\param k is the overdispersion parameter, i.e. shape parameter of underlying heterogeneity (different from tau). should be >0
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//\return negative log likelihood \f$ -( \ln(\Gamma(x+k))-\ln(\Gamma(k))-\ln(x!)+k\ln(k)+x\ln(\mu)-(k+x)\ln(k+\mu) )\f$
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//**/
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//dvariable dnbinom(const double& x, const prevariable& mu, const prevariable& k)
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//{
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//	//x is the observed count

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