# iterAbs > Create an [iterator][mdn-iterator-protocol] which iteratively computes the [absolute value][@stdlib/math/base/special/abs].
## Usage ```javascript var iterAbs = require( '@stdlib/math/iter/special/abs' ); ``` #### iterAbs( iterator ) Returns an [iterator][mdn-iterator-protocol] which iteratively computes the [absolute value][@stdlib/math/base/special/abs]. ```javascript var array2iterator = require( '@stdlib/array/to-iterator' ); var it = iterAbs( array2iterator( [ -1, 2, -3 ] ) ); // returns var r = it.next().value; // returns 1 r = it.next().value; // returns 2 r = it.next().value; // returns 3 // ... ``` The returned [iterator][mdn-iterator-protocol] protocol-compliant object has the following properties: - **next**: function which returns an [iterator][mdn-iterator-protocol] protocol-compliant object containing the next iterated value (if one exists) assigned to a `value` property and a `done` property having a `boolean` value indicating whether the iterator is finished. - **return**: function which closes an [iterator][mdn-iterator-protocol] and returns a single (optional) argument in an [iterator][mdn-iterator-protocol] protocol-compliant object.
## Notes - If an iterated value is non-numeric (including `NaN`), the returned [iterator][mdn-iterator-protocol] returns `NaN`. If non-numeric iterated values are possible, you are advised to provide an [`iterator`][mdn-iterator-protocol] which type checks and handles non-numeric values accordingly. - If an environment supports `Symbol.iterator` **and** a provided [iterator][mdn-iterator-protocol] is iterable, the returned [iterator][mdn-iterator-protocol] is iterable.
## Examples ```javascript var randu = require( '@stdlib/random/iter/randu' ); var iterAdd = require( '@stdlib/math/iter/ops/add' ); var iterAbs = require( '@stdlib/math/iter/special/abs' ); // Create a seeded iterator for generating pseudorandom numbers: var rand = randu({ 'seed': 1234, 'iter': 10 }); // Create an iterator which consumes the pseudorandom number iterator: var it = iterAbs( iterAdd( rand, -0.5 ) ); // Perform manual iteration... var r; while ( true ) { r = it.next(); if ( r.done ) { break; } console.log( r.value ); } ```