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Create an iterator which rounds each iterated value to the nearest power of two toward zero.
import iterTrunc2 from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-iter-special-trunc2@esm/index.mjs';Returns an iterator which rounds each iterated value to the nearest power of two toward zero.
import array2iterator from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-to-iterator@esm/index.mjs';
var it = iterTrunc2( 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 -8.0
// ...The returned iterator protocol-compliant object has the following properties:
- next: function which returns an iterator protocol-compliant object containing the next iterated value (if one exists) assigned to a
valueproperty and adoneproperty having abooleanvalue indicating whether the iterator is finished. - return: function which closes an iterator and returns a single (optional) argument in an iterator protocol-compliant object.
- If an iterated value is non-numeric (including
NaN), the returned iterator returnsNaN. If non-numeric iterated values are possible, you are advised to provide aniteratorwhich type checks and handles non-numeric values accordingly. - If an environment supports
Symbol.iteratorand a provided iterator is iterable, the returned iterator is iterable.
<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import uniform from 'https://cdn.jsdelivr.net/gh/stdlib-js/random-iter-uniform@esm/index.mjs';
import iterTrunc2 from 'https://cdn.jsdelivr.net/gh/stdlib-js/math-iter-special-trunc2@esm/index.mjs';
// 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 = iterTrunc2( rand );
// Perform manual iteration...
var r;
while ( true ) {
r = it.next();
if ( r.done ) {
break;
}
console.log( r.value );
}
</script>
</body>
</html>@stdlib/math-base/special/trunc2: round a numeric value to the nearest power of two toward zero.@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/floor2: create an iterator which rounds each iterated value to the nearest power of two 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.@stdlib/math-iter/special/trunc: create an iterator which rounds each iterated value toward zero.
This package is part of stdlib, a standard library 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.
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