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number2words

Split a number into the high and low 32-bit words of a 64-bit unsigned integer.

Installation

npm install @stdlib/number-uint64-base-number2words

Alternatively,

• To load the package in a website via a script tag without installation and bundlers, use the ES Module available on the esm branch (see README).
• If you are using Deno, visit the deno branch (see README for usage intructions).
• For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the umd branch (see README).

The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.

To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.

Usage

var number2words = require( '@stdlib/number-uint64-base-number2words' );

number2words( value )

Splits a number into the high and low 32-bit words of a 64-bit unsigned integer.

var w = number2words( 1234 );
// returns [ 0, 1234 ]

The function returns an array containing two elements: a higher order word and a lower order word. The lower order word contains the less significant bits, while the higher order word contains the more significant bits.

number2words.assign( value, out, stride, offset )

Splits a number into the high and low 32-bit words of a 64-bit unsigned integer and assigns results to a provided output array.

var Uint32Array = require( '@stdlib/array-uint32' );

var out = new Uint32Array( 2 );
// returns <Uint32Array>[ 0, 0 ]

var w = number2words.assign( 9007199254740991, out, 1, 0 );
// returns <Uint32Array>[ 2097151, 4294967295 ]

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

Notes

• For accurate results, the input value should be an integer in the range [0, 2^53-1].

Examples

var number2words = require( '@stdlib/number-uint64-base-number2words' );

var w = number2words( 1234 );
console.log( w );
// => [ 0, 1234 ]

w = number2words( 0x100000000 );
console.log( w );
// => [ 1, 0 ]

w = number2words( 9007199254740991 );
console.log( w );
// => [ 2097151, 4294967295 ]

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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

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License

See LICENSE.

Copyright

Copyright © 2016-2026. The Stdlib Authors.