npm package: @stdlib/utils-safe-int-max
Description: Return the maximum safe integer capable of being represented by a numeric real type.
Author: The Stdlib Authors
Latest version: 0.2.3

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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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# safeintmax

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> Return the maximum safe integer capable of being represented by a numeric real type.

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</section>

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<section class="installation">

## Installation

```bash
npm install @stdlib/utils-safe-int-max
```

</section>

<section class="usage">

## Usage

```javascript
var safeintmax = require( '@stdlib/utils-safe-int-max' );
```

#### safeintmax( dtype )

Returns the maximum **safe** integer capable of being represented by a numeric **real** type.

```javascript
var m = safeintmax( 'float64' );
// returns 9007199254740991
```

The following numeric **real** types are supported:

-   `float64`: double-precision floating-point numbers
-   `float32`: single-precision floating-point numbers
-   `float16`: half-precision floating-point numbers

</section>

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<section class="notes">

</section>

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<section class="examples">

## Examples

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

```javascript
var safeintmax = require( '@stdlib/utils-safe-int-max' );

var m = safeintmax( 'float64' );
// returns 9007199254740991

m = safeintmax( 'float32' );
// returns 16777215

m = safeintmax( 'float16' );
// returns 2047
```

</section>

<!-- /.examples -->

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## See Also

-   <span class="package-name">[`@stdlib/utils-safe-int-max-cli`][@stdlib/utils-safe-int-max-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</span>
-   <span class="package-name">[`@stdlib/utils-safe-int-min`][@stdlib/utils/safe-int-min]</span><span class="delimiter">: </span><span class="description">return the minimum safe integer capable of being represented by a numeric real type.</span>
-   <span class="package-name">[`@stdlib/utils-real-max`][@stdlib/utils/real-max]</span><span class="delimiter">: </span><span class="description">return the maximum finite value capable of being represented by a numeric real type.</span>
-   <span class="package-name">[`@stdlib/utils-type-max`][@stdlib/utils/type-max]</span><span class="delimiter">: </span><span class="description">return the maximum value of a specified numeric type.</span>

</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

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

---

## License

See [LICENSE][stdlib-license].


## Copyright

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

</section>

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[@stdlib/utils-safe-int-max-cli]: https://www.npmjs.com/package/@stdlib/utils-safe-int-max-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/utils-safe-int-max.svg
[npm-url]: https://npmjs.org/package/@stdlib/utils-safe-int-max

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[test-url]: https://github.com/stdlib-js/utils-safe-int-max/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/utils-safe-int-max/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/utils-safe-int-max?branch=main

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[stdlib]: https://github.com/stdlib-js/stdlib

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[cli-section]: https://github.com/stdlib-js/utils-safe-int-max#cli
[cli-url]: https://github.com/stdlib-js/utils-safe-int-max/tree/cli
[@stdlib/utils-safe-int-max]: https://github.com/stdlib-js/utils-safe-int-max/tree/main

[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

[deno-url]: https://github.com/stdlib-js/utils-safe-int-max/tree/deno
[deno-readme]: https://github.com/stdlib-js/utils-safe-int-max/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/utils-safe-int-max/tree/umd
[umd-readme]: https://github.com/stdlib-js/utils-safe-int-max/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/utils-safe-int-max/tree/esm
[esm-readme]: https://github.com/stdlib-js/utils-safe-int-max/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/utils-safe-int-max/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/utils-safe-int-max/main/LICENSE

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

[@stdlib/utils/safe-int-min]: https://www.npmjs.com/package/@stdlib/utils-safe-int-min

[@stdlib/utils/real-max]: https://www.npmjs.com/package/@stdlib/utils-real-max

[@stdlib/utils/type-max]: https://www.npmjs.com/package/@stdlib/utils-type-max

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