@stdlib/random-array-tools-binary-factory
v0.2.2
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Create a factory function for generating pseudorandom values drawn from a binary PRNG.
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binaryFactory
Create a factory function for generating pseudorandom values drawn from a binary PRNG.
Installation
npm install @stdlib/random-array-tools-binary-factory
Usage
var binaryFactory = require( '@stdlib/random-array-tools-binary-factory' );
binaryFactory( prng, dtypes, dtype )
Returns a factory function for generating pseudorandom values drawn from a binary PRNG.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, 'float64' );
// returns <Function>
The function has the following parameters:
- prng: binary pseudorandom number generator.
- dtypes: list of supported output data types.
- dtype: default output array data type.
factory( [param1, param2, ][options] )
Returns a function for generating pseudorandom values drawn from a binary PRNG.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
The function has the following parameters:
- param1: first PRNG parameter.
- param2: second PRNG parameter.
- options: function options.
The function supports the following options:
- prng: pseudorandom number generator which generates uniformly distributed pseudorandom numbers.
- seed: pseudorandom value generator seed.
- state: pseudorandom value generator state.
- copy: boolean indicating whether to copy a provided pseudorandom value generator state.
- dtype: default output array data type. Setting this option overrides the default output array data type provided to the parent function.
If provided PRNG parameters, the function returns a partially applied function for creating arrays, which can be useful when wanting to pass around a parameterized function for array creation.
Full Arity
random( len, param1, param2[, options] )
Returns an array of pseudorandom values drawn from a binary PRNG.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var v = random( 10, 2.0, 5.0 );
// returns <Float64Array>
The function has the following parameters:
- len: output array length.
- param1: first PRNG parameter.
- param2: second PRNG parameter.
- options: function options.
The function accepts the following options:
- dtype: output array data type. Setting this option overrides the default output array data type.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var v = random( 10, 2.0, 5.0, {
'dtype': 'float32'
});
// returns <Float32Array>
random.assign( param1, param2, out )
Fills an array with pseudorandom values drawn from a binary PRNG.
var arcsine = require( '@stdlib/random-base-arcsine' );
var zeros = require( '@stdlib/array-zeros' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var out = zeros( 10, 'float64' );
// returns <Float64Array>
var v = random.assign( 2.0, 5.0, out );
// returns <Float64Array>
var bool = ( out === v );
// returns true
The method has the following parameters:
- param1: first PRNG parameter.
- param2: second PRNG parameter.
- out: output array.
Partial Application
random( len[, options] )
Returns an array of pseudorandom values drawn from a binary PRNG.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory( 2.0, 5.0 );
// returns <Function>
var v = random( 10 );
// returns <Float64Array>
v = random( 10 );
// returns <Float64Array>
The function has the following parameters:
- len: output array length.
- options: function options.
The function accepts the following options:
- dtype: output array data type. Setting this option overrides the default output array data type.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory( 2.0, 5.0 );
// returns <Function>
var v = random( 10, {
'dtype': 'float32'
});
// returns <Float32Array>
v = random( 10, {
'dtype': 'generic'
});
// returns [...]
random.assign( out )
Fills an array with pseudorandom values drawn from a binary PRNG.
var arcsine = require( '@stdlib/random-base-arcsine' );
var zeros = require( '@stdlib/array-zeros' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory( 2.0, 5.0 );
// returns <Function>
var out = zeros( 10, 'float64' );
// returns <Float64Array>
var v = random.assign( out );
// returns <Float64Array>
var bool = ( out === v );
// returns true
The method has the following parameters:
- out: output array.
random.PRNG
The underlying pseudorandom number generator.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var prng = random.PRNG;
// returns <Function>
random.seed
The value used to seed the underlying pseudorandom number generator.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var seed = random.seed;
// returns <Uint32Array>
If the factory
function is provided a PRNG for uniformly distributed numbers, the associated property value on the returned function is null
.
var minstd = require( '@stdlib/random-base-minstd-shuffle' ).normalized;
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory({
'prng': minstd
});
// returns <Function>
var seed = random.seed;
// returns null
random.seedLength
Length of underlying pseudorandom number generator seed.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var len = random.seedLength;
// returns <number>
If the factory
function is provided a PRNG for uniformly distributed numbers, the associated property value on the returned function is null
.
var minstd = require( '@stdlib/random-base-minstd-shuffle' ).normalized;
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory({
'prng': minstd
});
// returns <Function>
var len = random.seedLength;
// returns null
random.state
Writable property for getting and setting the underlying pseudorandom number generator state.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var state = random.state;
// returns <Uint32Array>
If the factory
function is provided a PRNG for uniformly distributed numbers, the associated property value on the returned function is null
.
var minstd = require( '@stdlib/random-base-minstd-shuffle' ).normalized;
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory({
'prng': minstd
});
// returns <Function>
var state = random.state;
// returns null
random.stateLength
Length of underlying pseudorandom number generator state.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var len = random.stateLength;
// returns <number>
If the factory
function is provided a PRNG for uniformly distributed numbers, the associated property value on the returned function is null
.
var minstd = require( '@stdlib/random-base-minstd-shuffle' ).normalized;
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory({
'prng': minstd
});
// returns <Function>
var len = random.stateLength;
// returns null
random.byteLength
Size (in bytes) of underlying pseudorandom number generator state.
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory();
// returns <Function>
var sz = random.byteLength;
// returns <number>
If the factory
function is provided a PRNG for uniformly distributed numbers, the associated property value on the returned function is null
.
var minstd = require( '@stdlib/random-base-minstd-shuffle' ).normalized;
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = [ 'float64', 'float32', 'generic' ];
var factory = binaryFactory( arcsine, dtypes, dtypes[ 0 ] );
// returns <Function>
var random = factory({
'prng': minstd
});
// returns <Function>
var sz = random.byteLength;
// returns null
Examples
var arcsine = require( '@stdlib/random-base-arcsine' );
var dtypes = require( '@stdlib/array-dtypes' );
var binaryFactory = require( '@stdlib/random-array-tools-binary-factory' );
var dt = dtypes( 'real_floating_point_and_generic' );
var factory = binaryFactory( arcsine, dt, 'float64' );
// returns <Function>
var random = factory();
// returns <Function>
var x = random( 10, 2.0, 5.0 );
// returns <Float64Array>
x = random( 10, 2.0, 5.0, {
'dtype': 'float32'
});
// returns <Float32Array>
x = random( 10, 2.0, 5.0, {
'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.
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License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.