@stdlib/random-array-f/lib/factory.js

Create an array containing pseudorandom numbers drawn from an F distribution.

/**
* @license Apache-2.0
*
* Copyright (c) 2024 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 binaryFactory = require( '@stdlib/random-array-tools-binary-factory' );
var dtypes = require( '@stdlib/array-dtypes' );
var defaults = require( '@stdlib/array-defaults' );
var base = require( '@stdlib/random-base-f' );


// VARIABLES //

var DTYPES = dtypes( 'real_floating_point_and_generic' );


// MAIN //

/**
* Returns a function for creating arrays containing pseudorandom numbers drawn from an F distribution.
*
* @name factory
* @type {Function}
* @param {PositiveNumber} [d1] - degrees of freedom
* @param {PositiveNumber} [d2] - degrees of freedom
* @param {Options} [options] - function options
* @param {PRNG} [options.prng] - pseudorandom number generator which generates uniformly distributed pseudorandom numbers
* @param {PRNGSeedMT19937} [options.seed] - pseudorandom number generator seed
* @param {PRNGStateMT19937} [options.state] - pseudorandom number generator state
* @param {boolean} [options.copy=true] - boolean indicating whether to copy a provided pseudorandom number generator state
* @param {string} [options.dtype="float64"] - default data type
* @throws {TypeError} `d1` must be a positive number
* @throws {TypeError} `d2` must be a positive number
* @throws {TypeError} options argument must be an object
* @throws {TypeError} must provide valid options
* @throws {Error} must provide a valid state
* @returns {Function} function for creating arrays
*
* @example
* var f = factory( 2.0, 5.0 );
* // returns <Function>
*
* var arr = f( 10 );
* // returns <Float64Array>
*
* @example
* var f = factory( 2.0, 5.0 );
* // returns <Function>
*
* var arr = f( 10, {
*     'dtype': 'generic'
* });
* // returns [...]
*/
var factory = binaryFactory( base, DTYPES, defaults.get( 'dtypes.real_floating_point' ) );


// EXPORTS //

module.exports = factory;