Nullary

Constructor for creating arrays filled with pseudorandom values drawn from a nullary PRNG.

Installation

npm install @stdlib/random-array-tools-nullary

Usage

var Random = require( '@stdlib/random-array-tools-nullary' );

Random( prng, dtypes, dtype )

Constructor for creating arrays filled with pseudorandom values drawn from a nullary PRNG.

var exponential = require( '@stdlib/random-base-exponential' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

The constructor has the following parameters:

• prng: nullary pseudorandom value generator.
• dtypes: list of supported output data types.
• dtype: default output data type.

Random.prototype.generate( len[, options] )

Returns an array filled with pseudorandom values drawn from a nullary PRNG.

var exponential = require( '@stdlib/random-base-exponential' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

var v = random.generate( 10 );
// returns <Float64Array>

The method has the following parameters:

• len: output array length.
• options: function options.

The method accepts the following options:

• dtype: output array data type. Setting this option, overrides the default output array data type.

By default, the method returns an array having the default output array data type. To override the default, set the dtype option.

var exponential = require( '@stdlib/random-base-exponential' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

var v = random.generate( 10, {
    'dtype': 'float32'
});
// returns <Float32Array>

Random.prototype.assign( out )

Fills an array with pseudorandom values drawn from a nullary PRNG.

var exponential = require( '@stdlib/random-base-exponential' );
var zeros = require( '@stdlib/array-zeros' );

var dtypes = [ 'float64', 'float32', 'generic' ];
var defaultDType = 'float64';

var random = new Random( exponential.factory( 2.0 ), dtypes, defaultDType );

var out = zeros( 10, 'float64' );
// returns <Float64Array>

var v = random.assign( out );
// returns <Float64Array>

var bool = ( v === out );
// returns true

The method has the following parameters:

• out: output array.

Examples

var exponential = require( '@stdlib/random-base-exponential' );
var dtypes = require( '@stdlib/array-dtypes' );
var Random = require( '@stdlib/random-array-tools-nullary' );

var dt = dtypes( 'real_floating_point_and_generic' );
var random = new Random( exponential.factory( 2.0 ), dt, 'float64' );

var x = random.generate( 10 );
// returns <Float64Array>

x = random.generate( 10, {
    'dtype': 'float32'
});
// returns <Float32Array>

x = random.generate( 10, {
    'dtype': 'generic'
});
// returns [...]

Notice

This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.