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Binary String

Return a string giving the literal bit representation of an unsigned 8-bit integer.

Installation

npm install @stdlib/number-uint8-base-to-binary-string

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 toBinaryString = require( '@stdlib/number-uint8-base-to-binary-string' );

toBinaryString( x )

Returns a string giving the literal bit representation of an unsigned 8-bit integer.

var Uint8Array = require( '@stdlib/array-uint8' );

var a = new Uint8Array( [ 1, 4, 9 ] );

var str = toBinaryString( a[0] );
// returns '00000001'

str = toBinaryString( a[1] );
// returns '00000100'

str = toBinaryString( a[2] );
// returns '00001001'

Notes

• Except for typed arrays, JavaScript does not provide native user support for unsigned 8-bit integers. According to the ECMAScript standard, number values correspond to double-precision floating-point numbers. While this function is intended for unsigned 8-bit integers, the function will accept floating-point values and represent the values as if they are unsigned 8-bit integers. Accordingly, care should be taken to ensure that only nonnegative integer values less than 256 (2^8) are provided.

  var str = toBinaryString( 1 );
  // returns '00000001'
  
  str = toBinaryString( 4 );
  // returns '00000100'
  
  str = toBinaryString( 9 );
  // returns '00001001'
  
  str = toBinaryString( 255 );
  // returns '11111111'

Examples

var Uint8Array = require( '@stdlib/array-uint8' );
var MAX_UINT8 = require( '@stdlib/constants-uint8-max' );
var toBinaryString = require( '@stdlib/number-uint8-base-to-binary-string' );

var x;
var y;
var b;
var i;

x = new Uint8Array( MAX_UINT8+1 );
for ( i = 0; i < x.length; i++ ) {
    x[ i ] = i;
}

// Convert unsigned 8-bit integers to literal bit representations...
for ( i = 0; i < x.length; i++ ) {
    b = toBinaryString( x[i] );
    y = parseInt( b, 2 );
    console.log( 'x: %d, b: %s, y: %d', x[i], b, y );
}

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See Also

• @stdlib/number-float64/base/to-binary-string: return a string giving the literal bit representation of a double-precision floating-point number.

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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 © 2016-2024. The Stdlib Authors.