float64-to-binary-string

Binary String

Returns a string giving the literal bit representation of a double-precision floating-point number.

Usage

var binaryString = require( '@stdlib/math/base/utils/float64-to-binary-string' );

binaryString( x )

Returns a string giving the literal bit representation of a double-precision floating-point number.

var str = binaryString( 4 );
// returns '0100000000010000000000000000000000000000000000000000000000000000'

str = binaryString( Math.PI );
// returns '0100000000001001001000011111101101010100010001000010110100011000'

str = binaryString( -1e308 );
// returns '1111111111100001110011001111001110000101111010111100100010100000'

The function handles subnormals.

str = binaryString( -3.14e-320 );
// returns '1000000000000000000000000000000000000000000000000001100011010011'

str = binaryString( 5e-324 );
// returns '0000000000000000000000000000000000000000000000000000000000000001'

The function handles special values.

str = binaryString( 0 );
// returns '0000000000000000000000000000000000000000000000000000000000000000'

str = binaryString( -0 );
// returns '1000000000000000000000000000000000000000000000000000000000000000'

str = binaryString( NaN );
// returns '0111111111111000000000000000000000000000000000000000000000000000'

str = binaryString( Number.POSITIVE_INFINITY );
// returns '0111111111110000000000000000000000000000000000000000000000000000'

str = binaryString( Number.NEGATIVE_INFINITY );
// returns '1111111111110000000000000000000000000000000000000000000000000000'

Examples

var round = require( '@stdlib/math/base/special/round' );
var pow = require( '@stdlib/math/base/special/pow' );
var smallest = require( '@stdlib/math/constants/float64-smallest' );
var binaryString = require( '@stdlib/math/base/utils/float64-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 ( Math.random() < 0.5 ) {
		sign = -1;
	} else {
		sign = 1;
	}
	frac = Math.random() * 10;
	exp = round( Math.random()*100 );
	if ( Math.random() < 0.5 ) {
		exp = -exp;
	}
	x = sign * frac * pow( 2, exp );
	b = binaryString( x );
	console.log( b );
}