npm package: @stdlib/math-base-assert-int32-is-even
Description: Test if a 32-bit integer is even.
Author: The Stdlib Authors
Latest version: 0.3.2

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<details>
  <summary>
    About stdlib...
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# isEven

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

> Test if a 32-bit integer is even.

<section class="installation">

## Installation

```bash
npm install @stdlib/math-base-assert-int32-is-even
```

</section>

<section class="usage">

## Usage

```javascript
var isEven = require( '@stdlib/math-base-assert-int32-is-even' );
```

#### isEven( x )

Tests if 32-bit integer is even.

```javascript
var bool = isEven( 5 );
// returns false

bool = isEven( -2 );
// returns true

bool = isEven( 0 );
// returns true
```

</section>

<!-- /.usage -->

<section class="notes">

</section>

<!-- /.notes -->

<section class="examples">

## Examples

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

```javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var logEachMap = require( '@stdlib/console-log-each-map' );
var isEven = require( '@stdlib/math-base-assert-int32-is-even' );

var opts = {
    'dtype': 'int32'
};
var x = discreteUniform( 100, 0, 100, opts );

function isEvenWrapper( integer ) {
    return ( isEven( integer ) ) ? 'even' : 'not even';
}
logEachMap( '%d is %s', x, isEvenWrapper );
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

<!-- Section to include introductory text. Make sure to keep an empty line after the intro `section` element and another before the `/section` close. -->

<section class="intro">

</section>

<!-- /.intro -->

<!-- C usage documentation. -->

<section class="usage">

### Usage

```c
#include "stdlib/math/base/assert/int32_is_even.h"
```

#### stdlib_base_int32_is_even( x )

Tests if 32-bit integer is even.

```c
#include <stdbool.h>

bool out = stdlib_base_int32_is_even( -2 );
// returns true

out = stdlib_base_int32_is_even( 5 );
// returns false
```

The function accepts the following arguments:

-   **x**: `[in] int32_t` input value.

```c
bool stdlib_base_int32_is_even( const int32_t x );
```

</section>

<!-- /.usage -->

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

<section class="notes">

</section>

<!-- /.notes -->

<!-- C API usage examples. -->

<section class="examples">

### Examples

```c
#include "stdlib/math/base/assert/int32_is_even.h"
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>

int main( void ) {
    const int32_t x[] = { 5, -5, 3, -3, 0, 2 };

    bool b;
    int i;
    for ( i = 0; i < 5; i++ ) {
        b = stdlib_base_int32_is_even( x[ i ] );
        printf( "Value: %d. int32 Is even? %s.\n", x[ i ], ( b ) ? "True" : "False" );
    }
}
```

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

* * *

## See Also

-   <span class="package-name">[`@stdlib/math-base/assert/is-even`][@stdlib/math/base/assert/is-even]</span><span class="delimiter">: </span><span class="description">test if a finite numeric value is an even number.</span>
-   <span class="package-name">[`@stdlib/math-base/assert/int32-is-odd`][@stdlib/math/base/assert/int32-is-odd]</span><span class="delimiter">: </span><span class="description">test if a 32-bit integer is odd.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<section class="main-repo" >

* * *

## 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

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

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

</section>

<!-- /.stdlib -->

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<!-- <related-links> -->

[@stdlib/math/base/assert/is-even]: https://www.npmjs.com/package/@stdlib/math-base-assert-is-even

[@stdlib/math/base/assert/int32-is-odd]: https://www.npmjs.com/package/@stdlib/math-base-assert-int32-is-odd

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</section>

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