About stdlib...
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
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npm install @stdlib/constants-float32-sqrt-epsAlternatively,
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var FLOAT32_SQRT_EPS = require( '@stdlib/constants-float32-sqrt-eps' );Square root of single-precision floating-point epsilon.
var bool = ( FLOAT32_SQRT_EPS === 0.0003452669770922512 );
// returns truevar abs = require( '@stdlib/math-base-special-abs' );
var max = require( '@stdlib/math-base-special-max' );
var float64ToFloat32 = require( '@stdlib/number-float64-base-to-float32' );
var randu = require( '@stdlib/random-base-randu' );
var FLOAT32_SQRT_EPS = require( '@stdlib/constants-float32-sqrt-eps' );
var bool;
var a;
var b;
var i;
function isApprox( a, b ) {
var delta;
var tol;
delta = float64ToFloat32( abs( a - b ) );
tol = float64ToFloat32( FLOAT32_SQRT_EPS * max( abs( a ), abs( b ) ) );
return ( delta <= tol );
}
for ( i = 0; i < 100; i++ ) {
a = float64ToFloat32( randu()*10.0 );
b = float64ToFloat32( a + (randu()*2.0e-2) - 1.0e-2 );
bool = isApprox( a, b );
console.log( '%d %s approximately equal to %d', a, ( bool ) ? 'is' : 'is not', b );
}#include "stdlib/constants/float32/sqrt_eps.h"Macro for the square root of single-precision floating-point epsilon.
@stdlib/constants-float32/eps: difference between one and the smallest value greater than one that can be represented as a single-precision floating-point number.@stdlib/constants-float64/sqrt-eps: square root of double-precision floating-point epsilon.
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.
See LICENSE.
Copyright © 2016-2024. The Stdlib Authors.
