npm package: @stdlib/napi-create-int32
Description: Convert a signed 32-bit integer to a Node-API value.
Author: The Stdlib Authors
Latest version: 0.0.3

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<details>
  <summary>
    About stdlib...
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  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# create_int32

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

> Convert a signed 32-bit integer to a Node-API value.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/napi-create-int32
```

</section>

<section class="usage">

## Usage

```javascript
var headerDir = require( '@stdlib/napi-create-int32' );
```

#### headerDir

Absolute file path for the directory containing header files for C APIs.

```javascript
var dir = headerDir;
// returns <string>
```

</section>

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<section class="notes">

</section>

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<section class="examples">

## Examples

```javascript
var headerDir = require( '@stdlib/napi-create-int32' );

console.log( headerDir );
// => <string>
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

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<section class="intro">

</section>

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<section class="usage">

### Usage

```c
#include "stdlib/napi/create_int32.h"
```

#### stdlib_napi_create_int32( env, value, \*out )

Converts a signed 32-bit integer to a Node-API value.

```c
#include "stdlib/napi/create_int32.h"
#include <node_api.h>

static napi_value addon( napi_env env, napi_callback_info info ) {

    // ...

    napi_value value;
    napi_status status = stdlib_napi_create_int32( env, 1, &value );
    assert( status == napi_ok );
    if ( err != NULL ) {
        assert( napi_throw( env, err ) == napi_ok );
        return NULL;
    }

    // ...
}
```

The function accepts the following arguments:

-   **env**: `[in] napi_env` environment under which the function is invoked.
-   **value**: `[in] int32_t` signed 32-bit integer.
-   **out**: `[out] napi_value*` destination for storing output value.

```c
napi_status stdlib_napi_create_int32( const napi_env env, const int32_t value, napi_value *out );
```

The function returns a `napi_status` status code indicating success or failure (returns `napi_ok` if success).

#### STDLIB_NAPI_CREATE_INT32( env, expression, name )

Macro for converting a signed 32-bit integer to a Node-API value.

```c
#include "stdlib/napi/create_int32.h"
#include "stdlib/napi/argv_int32.h"
#include "stdlib/napi/argv.h"
#include <node_api.h>
#include <stdint.h>

static int32_t fcn( const int32_t v ) {
    return v;
}

// ...

static napi_value addon( napi_env env, napi_callback_info info ) {
    // Retrieve add-on callback arguments:
    STDLIB_NAPI_ARGV( env, info, argv, argc, 1 );

    // Convert the first argument to a C type:
    STDLIB_NAPI_ARGV_INT32( env, value, argv, 0 );

    // ...

    // Convert a value having a C type to a Node-API value:
    STDLIB_NAPI_CREATE_INT32( env, fcn( value ), out );

    return out;
}
```

The macro expects the following arguments:

-   **env**: environment under which the callback is invoked.
-   **expression**: expression returning a signed 32-bit integer.
-   **name**: output variable name.

</section>

<!-- /.usage -->

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<section class="notes">

</section>

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

<section class="examples">

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

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</section>

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</section>

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<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

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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