README
Binary String
Return a string giving the literal bit representation of a double-precision floating-point number.
Installation
npm install @stdlib/number-float64-base-to-binary-string
Usage
var toBinaryString = require( '@stdlib/number-float64-base-to-binary-string' );
toBinaryString( x )
Returns a string
giving the literal bit representation of a double-precision floating-point number.
var str = toBinaryString( 4.0 );
// returns '0100000000010000000000000000000000000000000000000000000000000000'
str = toBinaryString( 3.141592653589793 );
// returns '0100000000001001001000011111101101010100010001000010110100011000'
str = toBinaryString( -1.0e308 );
// returns '1111111111100001110011001111001110000101111010111100100010100000'
The function handles subnormals.
str = toBinaryString( -3.14e-320 );
// returns '1000000000000000000000000000000000000000000000000001100011010011'
str = toBinaryString( 5.0e-324 );
// returns '0000000000000000000000000000000000000000000000000000000000000001'
The function handles special values.
str = toBinaryString( 0.0 );
// returns '0000000000000000000000000000000000000000000000000000000000000000'
str = toBinaryString( -0.0 );
// returns '1000000000000000000000000000000000000000000000000000000000000000'
str = toBinaryString( NaN );
// returns '0111111111111000000000000000000000000000000000000000000000000000'
str = toBinaryString( Infinity );
// returns '0111111111110000000000000000000000000000000000000000000000000000'
str = toBinaryString( -Infinity );
// returns '1111111111110000000000000000000000000000000000000000000000000000'
Examples
var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var pow = require( '@stdlib/math-base-special-pow' );
var toBinaryString = require( '@stdlib/number-float64-base-to-binary-string' );
var frac;
var sign;
var exp;
var b;
var x;
var i;
// Convert random numbers to literal bit representations...
for ( i = 0; i < 100; i++ ) {
if ( randu() < 0.5 ) {
sign = -1.0;
} else {
sign = 1.0;
}
frac = randu() * 10.0;
exp = round( randu()*100.0 );
if ( randu() < 0.5 ) {
exp = -exp;
}
x = sign * frac * pow( 2.0, exp );
b = toBinaryString( x );
console.log( b );
}
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
Copyright © 2016-2022. The Stdlib Authors.