# Cube Root of Epsilon
> [Cube root][@stdlib/math/base/special/cbrt] of [half-precision floating-point epsilon][@stdlib/constants/float16/eps].
## Usage
```javascript
var FLOAT16_CBRT_EPSILON = require( '@stdlib/constants/float16/cbrt-eps' );
```
#### FLOAT16_CBRT_EPSILON
[Cube root][@stdlib/math/base/special/cbrt] of [half-precision floating-point epsilon][@stdlib/constants/float16/eps].
```javascript
var bool = ( FLOAT16_CBRT_EPSILON === 0.09921256574801247 );
// returns true
```
## Examples
```javascript
var abs = require( '@stdlib/math/base/special/abs' );
var maxabs = require( '@stdlib/math/base/special/maxabs' );
var randu = require( '@stdlib/random/base/randu' );
var FLOAT16_CBRT_EPSILON = require( '@stdlib/constants/float16/cbrt-eps' );
var bool;
var a;
var b;
var i;
function isApprox( a, b ) {
var delta;
var tol;
delta = abs( a - b );
tol = FLOAT16_CBRT_EPSILON * maxabs( a, b );
return ( delta <= tol );
}
for ( i = 0; i < 100; i++ ) {
a = randu() * 10.0;
b = a + randu() - 0.5;
bool = isApprox( a, b );
console.log( '%d %s approximately equal to %d', a, ( bool ) ? 'is' : 'is not', b );
}
```
[@stdlib/math/base/special/cbrt]: https://www.npmjs.com/package/@stdlib/math-base-special-cbrt
[@stdlib/constants/float16/eps]: https://github.com/stdlib-js/constants/tree/main/float16/eps
[@stdlib/constants/float16/sqrt-eps]: https://github.com/stdlib-js/constants/tree/main/float16/sqrt-eps
[@stdlib/constants/float32/cbrt-eps]: https://github.com/stdlib-js/constants/tree/main/float32/cbrt-eps
[@stdlib/constants/float64/cbrt-eps]: https://github.com/stdlib-js/constants/tree/main/float64/cbrt-eps