@stdlib/random-base-reviver NPM

reviveBasePRNG

Revive a JSON-serialized pseudorandom number generator (PRNG).

Installation

npm install @stdlib/random-base-reviver

Usage

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

reviveBasePRNG( key, value )

Revives a JSON-serialized pseudorandom number generator (PRNG).

var parseJSON = require( '@stdlib/utils-parse-json' );
var randu = require( '@stdlib/random-base-randu' );

var str = JSON.stringify( randu );

var rand = parseJSON( str, reviveBasePRNG );
// returns <Function>

For details on the JSON serialization format, see the .toJSON() method for, e.g., randu().

Examples

var randu = require( '@stdlib/random-base-randu' );
var parseJSON = require( '@stdlib/utils-parse-json' );
var reviveBasePRNG = require( '@stdlib/random-base-reviver' );

// Progress the PRNG state...
var r1;
var i;
for ( i = 0; i < 100; i++ ) {
    r1 = randu();
}

// Serialize the PRNG as a JSON string:
var str = JSON.stringify( randu );

// Revive the JSON-serialized PRNG:
var rand = parseJSON( str, reviveBasePRNG );
if ( rand instanceof Error ) {
    console.error( rand.message );
}

// Generate duplicate sequences...
var r2;
for ( i = 0; i < 100; i++ ) {
    r1 = randu();
    r2 = rand();
    console.log( '%d == %d ? %s', r1, r2, ( r1 === r2 ).toString() );
}

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.