poisson_lpmf() [1/3]

template<bool propto, typename T_n_cl , typename T_rate_cl , require_all_prim_or_rev_kernel_expression_t< T_n_cl, T_rate_cl > * = nullptr, require_any_not_stan_scalar_t< T_n_cl, T_rate_cl > * = nullptr>

return_type_t< T_rate_cl > stan::math::poisson_lpmf	(	const T_n_cl &	n,
		const T_rate_cl &	lambda
	)

Returns the log PMF of the Poisson distribution.

If containers are supplied, returns the log sum of the probabilities.

Template Parameters

T_n_cl	type of integer parameters
T_rate_cl	type of chance of success parameters

Parameters

n	integer parameter
lambda	rate parameter

Returns

log probability or log sum of probabilities

Exceptions

std::domain_error	if lambda is not a valid probability
std::invalid_argument	if container sizes mismatch.

Definition at line 31 of file poisson_lpmf.hpp.