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Create an iterator which iteratively evaluates the binary logarithm.
npm install @stdlib/math-iter-special-log2Alternatively,
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umdbranch (see README).
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var iterLog2 = require( '@stdlib/math-iter-special-log2' );Returns an iterator which iteratively evaluates the binary logarithm.
var array2iterator = require( '@stdlib/array-to-iterator' );
var it = iterLog2( array2iterator( [ 4.0, 0.0, Infinity ] ) );
// returns <Object>
var r = it.next().value;
// returns 2.0
r = it.next().value;
// returns -Infinity
r = it.next().value;
// returns Infinity
// ...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.
var uniform = require( '@stdlib/random-iter-uniform' );
var iterLog2 = require( '@stdlib/math-iter-special-log2' );
// Create a seeded iterator for generating pseudorandom numbers:
var rand = uniform( 0.0, 1000.0, {
'seed': 1234,
'iter': 10
});
// Create an iterator which consumes the pseudorandom number iterator:
var it = iterLog2( rand );
// Perform manual iteration...
var r;
while ( true ) {
r = it.next();
if ( r.done ) {
break;
}
console.log( r.value );
}@stdlib/math-base/special/log2: binary logarithm (base 2).@stdlib/math-iter/special/log: create an iterator which computes the baseblogarithm.@stdlib/math-iter/special/log10: create an iterator which evaluates the common logarithm (logarithm with base 10) for each iterated value.@stdlib/math-iter/special/log1p: create an iterator which evaluates the natural logarithm of 1 x for each iterated value.@stdlib/math-iter/special/pow: create an iterator which evaluates the exponential function.
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.
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