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SQRT_EPS
Installation
npm install @stdlib/constantsfloat64sqrteps
Usage
var SQRT_EPS = require( '@stdlib/constantsfloat64sqrteps' );
SQRT_EPS
Square root of doubleprecision floatingpoint epsilon.
var bool = ( SQRT_EPS === 0.14901161193847656e7 );
// returns true
Examples
var abs = require( '@stdlib/mathbasespecialabs' );
var max = require( '@stdlib/mathbasespecialmax' );
var randu = require( '@stdlib/randombaserandu' );
var SQRT_EPS = require( '@stdlib/constantsfloat64sqrteps' );
var bool;
var a;
var b;
var i;
function isApprox( a, b ) {
var delta;
var tol;
delta = abs( a  b );
tol = SQRT_EPS * max( abs( a ), abs( b ) );
return ( delta <= tol );
}
for ( i = 0; i < 100; i++ ) {
a = randu() * 10.0;
b = a + (randu()*5.0e7)  2.5e7;
bool = isApprox( a, b );
console.log( '%d %s approximately equal to %d. Delta: %d.', a, ( bool ) ? 'is' : 'is not', b, abs( a  b ) );
}
C APIs
Usage
#include "stdlib/constants/float64/sqrt_eps.h"
STDLIB_CONSTANT_FLOAT64_SQRT_EPS
Macro for the square root of doubleprecision floatingpoint epsilon.
See Also

@stdlib/constantsfloat64/eps
: difference between one and the smallest value greater than one that can be represented as a doubleprecision floatingpoint 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
Copyright © 20162024. The Stdlib Authors.