iterFloor2
Create an iterator which rounds each iterated value to the nearest power of two toward negative infinity.
Installation
npm install @stdlib/mathiterspecialfloor2
Usage
var iterFloor2 = require( '@stdlib/mathiterspecialfloor2' );
iterFloor2( iterator )
Returns an iterator which rounds each iterated value to the nearest power of two toward negative infinity.
var array2iterator = require( '@stdlib/arraytoiterator' );
var it = iterFloor2( array2iterator( [ 9.5, 13.0, 13.0 ] ) );
// returns <Object>
var r = it.next().value;
// returns 8.0
r = it.next().value;
// returns 8.0
r = it.next().value;
// returns 16.0
// ...
The returned iterator protocolcompliant object has the following properties:

next: function which returns an iterator protocolcompliant object containing the next iterated value (if one exists) assigned to a
value
property and adone
property having aboolean
value indicating whether the iterator is finished.  return: function which closes an iterator and returns a single (optional) argument in an iterator protocolcompliant object.
Notes
 If an iterated value is nonnumeric (including
NaN
), the returned iterator returnsNaN
. If nonnumeric iterated values are possible, you are advised to provide aniterator
which type checks and handles nonnumeric values accordingly.  If an environment supports
Symbol.iterator
and a provided iterator is iterable, the returned iterator is iterable.
Examples
var uniform = require( '@stdlib/randomiteruniform' );
var iterFloor2 = require( '@stdlib/mathiterspecialfloor2' );
// Create a seeded iterator for generating pseudorandom numbers:
var rand = uniform( 200.0, 200.0, {
'seed': 1234,
'iter': 10
});
// Create an iterator which consumes the pseudorandom number iterator:
var it = iterFloor2( rand );
// Perform manual iteration...
var r;
while ( true ) {
r = it.next();
if ( r.done ) {
break;
}
console.log( r.value );
}
See Also

@stdlib/math/base/special/floor2
: round a numeric value to the nearest power of two toward negative infinity. 
@stdlib/math/iter/special/ceil2
: create an iterator which rounds each iterated value to the nearest power of two toward positive infinity. 
@stdlib/math/iter/special/floor
: create an iterator which rounds each iterated value toward negative infinity. 
@stdlib/math/iter/special/floor10
: create an iterator which rounds each iterated value to the nearest power of 10 toward negative infinity. 
@stdlib/math/iter/special/round2
: create an iterator which rounds each iterated value to the nearest power of two on a linear scale.
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 © 20162022. The Stdlib Authors.