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

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 );
}

See Also

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

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

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