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* @license Apache-2.0
*
* Copyright (c) 2025 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var addon = require( './../src/addon.node' );
// MAIN //
/**
* Evaluates the natural logarithm of the probability mass function (PMF) for a hypergeometric distribution with population size `N`, subpopulation size `K`, and number of draws `n`.
*
* @private
* @param {number} x - input value
* @param {NonNegativeInteger} N - population size
* @param {NonNegativeInteger} K - subpopulation size
* @param {NonNegativeInteger} n - number of draws
* @returns {number} evaluated logPMF
*
* @example
* var y = logpmf( 1.0, 8, 4, 2 );
* // returns ~-0.56
*
* @example
* var y = logpmf( 2.0, 8, 4, 2 );
* // returns ~-1.54
*
* @example
* var y = logpmf( 0.0, 8, 4, 2 );
* // returns ~-1.54
*
* @example
* var y = logpmf( 1.5, 8, 4, 2 );
* // returns -Infinity
*
* @example
* var y = logpmf( 2.0, -10, 5, 2 );
* // returns NaN
*
* @example
* var y = logpmf( 2.0, 10, -5, 2 );
* // returns NaN
*
* @example
* var y = logpmf( 2.0, 10, 5, -2 );
* // returns NaN
*
* @example
* var y = logpmf( 2.0, 10, 5, 12 );
* // returns NaN
*
* @example
* var y = logpmf( 2.0, 8, 3, 9 );
* // returns NaN
*/
function logpmf( x, N, K, n ) {
return addon( x, N, K, n );
}
// EXPORTS //
module.exports = logpmf;
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