time-to-botec/squiggle/node_modules/@stdlib/random/base/betaprime/lib/main.js

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/**
* @license Apache-2.0
*
* Copyright (c) 2018 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 factory = require( './factory.js' );
// MAIN //
/**
* Generates a beta prime distributed random number.
*
* @name betaprime
* @type {PRNG}
* @param {PositiveNumber} alpha - first shape parameter
* @param {PositiveNumber} beta - second shape parameter
* @returns {PositiveNumber} pseudorandom number
*
* @example
* var r = betaprime( 2.0, 5.0 );
* // returns <number>
*
* @example
* var r = betaprime( -2.0, 5.0 );
* // returns NaN
*/
var betaprime = factory();
// EXPORTS //
module.exports = betaprime;