npm package: @stdlib/ndarray-base-assert-is-buffer-length-compatible
Description: Determine if a buffer length is compatible with provided ndarray meta data.
Author: The Stdlib Authors
Latest version: 0.1.3

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# isBufferLengthCompatible

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> Determine if a buffer length is compatible with ndarray meta data.

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<section class="intro">

</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-base-assert-is-buffer-length-compatible
```

</section>

<section class="usage">

## Usage

```javascript
var isBufferLengthCompatible = require( '@stdlib/ndarray-base-assert-is-buffer-length-compatible' );
```

#### isBufferLengthCompatible( len, shape, strides, offset )

Returns a `boolean` indicating if a buffer `length` is compatible with provided ndarray meta data.

```javascript
var shape = [ 2, 2 ];
var strides = [ 2, 1 ];
var offset = 25;

var bool = isBufferLengthCompatible( 30, shape, strides, offset );
// returns true

bool = isBufferLengthCompatible( 4, shape, strides, offset );
// returns false
```

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<section class="examples">

## Examples

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

```javascript
var discreteUniform = require( '@stdlib/random-base-discrete-uniform' );
var shape2strides = require( '@stdlib/ndarray-base-shape2strides' );
var strides2offset = require( '@stdlib/ndarray-base-strides2offset' );
var randu = require( '@stdlib/random-base-randu' );
var isBufferLengthCompatible = require( '@stdlib/ndarray-base-assert-is-buffer-length-compatible' );

var strides;
var offset;
var shape;
var bool;
var len;
var i;
var j;

len = 500; // buffer length
shape = [ 0, 0, 0 ];

for ( i = 0; i < 100; i++ ) {
    // Generate a random array shape:
    shape[ 0 ] = discreteUniform( 1, 10 );
    shape[ 1 ] = discreteUniform( 1, 10 );
    shape[ 2 ] = discreteUniform( 1, 10 );

    // Generate strides:
    if ( randu() < 0.5 ) {
        strides = shape2strides( shape, 'row-major' );
    } else {
        strides = shape2strides( shape, 'column-major' );
    }
    j = discreteUniform( 0, shape.length-1 );
    strides[ j ] *= ( randu() < 0.5 ) ? -1 : 1;

    // Compute the index offset:
    offset = strides2offset( shape, strides ) + discreteUniform( 0, 200 );

    // Determine if a buffer length is compatible with generated meta data:
    bool = isBufferLengthCompatible( len, shape, strides, offset );
    console.log( 'Buffer length: %d. Shape: %s. Strides: %s. Offset: %d. Compatible: %s.', len, shape.join( 'x' ), strides.join( ',' ), offset, bool );
}
```

</section>

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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.

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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