npm package: @stdlib/ndarray-base-tiling-block-size
Description: Resolve a loop block size for multi-dimensional array tiled loops.
Author: The Stdlib Authors
Latest version: 0.1.1

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# blockSize

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Resolve a loop block size for multi-dimensional array tiled loops.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-tiling-block-size
```

</section>

<section class="usage">

## Usage

```javascript
var blockSize = require( '@stdlib/ndarray-base-tiling-block-size' );
```

#### blockSize( dtypes )

Resolves a loop block size for multi-dimensional array tiled loops according to provided ndarray [data types][@stdlib/ndarray/dtypes].

```javascript
var bsize = blockSize( [ 'float64', 'float64', 'float64', 'float64' ] );
// returns <number>
```

The function supports the following arguments:

-   **dtypes**: list of input and output ndarray [data types][@stdlib/ndarray/dtypes].

</section>

<!-- /.usage -->

<!-- Package usage notes. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->

<section class="notes">

## Notes

-   The returned loop tiling block size is in units of elements.

</section>

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<!-- Package usage examples. -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var dtypes = require( '@stdlib/ndarray-dtypes' );
var cartesianPower = require( '@stdlib/array-base-cartesian-power' );
var promoteDataTypes = require( '@stdlib/ndarray-base-promote-dtypes' );
var blockSize = require( '@stdlib/ndarray-base-tiling-block-size' );

// Generate a list of input ndarray dtype triplets:
var dt = cartesianPower( dtypes(), 3 );

// Resolve the block size for each dtype triplet and its promoted dtype...
var t;
var b;
var i;
console.log( 'block_size, xdtype, ydtype, zdtype, wdtype' );
for ( i = 0; i < dt.length; i++ ) {
    t = promoteDataTypes( dt[ i ] );
    dt[ i ].push( ( t === null ) ? 'generic' : t );
    b = blockSize( dt[ i ] );
    console.log( '%d, %s, %s, %s, %s', b, dt[i][0], dt[i][1], dt[i][2], dt[i][3] );
}
```

</section>

<!-- /.examples -->

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* * *

## Notice

This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].

#### Community

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---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-base-tiling-block-size/main/LICENSE

[@stdlib/ndarray/dtypes]: https://www.npmjs.com/package/@stdlib/ndarray-dtypes

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