npm package: @stdlib/constants-float64-max-safe-integer
Description: Maximum safe double-precision floating-point integer.
Author: The Stdlib Authors
Latest version: 0.2.3

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  <summary>
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# FLOAT64_MAX_SAFE_INTEGER

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

> Maximum safe [double-precision floating-point][ieee754] integer.

<section class="installation">

## Installation

```bash
npm install @stdlib/constants-float64-max-safe-integer
```

</section>

<section class="usage">

## Usage

```javascript
var FLOAT64_MAX_SAFE_INTEGER = require( '@stdlib/constants-float64-max-safe-integer' );
```

#### FLOAT64_MAX_SAFE_INTEGER

The maximum [safe][safe-integers] [double-precision floating-point][ieee754] integer.

```javascript
var bool = ( FLOAT64_MAX_SAFE_INTEGER === 9007199254740991 );
// returns true
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var randu = require( '@stdlib/random-base-randu' );
var round = require( '@stdlib/math-base-special-round' );
var pow = require( '@stdlib/math-base-special-pow' );
var FLOAT64_MAX_SAFE_INTEGER = require( '@stdlib/constants-float64-max-safe-integer' );

var max;
var x;
var i;

max = pow( 2.0, 55 );
for ( i = 0; i < 100; i++ ) {
    x = round( randu() * max );
    if ( x > FLOAT64_MAX_SAFE_INTEGER ) {
        console.log( 'Unsafe: %d', x );
    } else {
        console.log( 'Safe: %d', x );
    }
}
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

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<section class="intro">

</section>

<!-- /.intro -->

<!-- C usage documentation. -->

<section class="usage">

### Usage

```c
#include "stdlib/constants/float64/max_safe_integer.h"
```

#### STDLIB_CONSTANT_FLOAT64_MAX_SAFE_INTEGER

Macro for the maximum [safe][safe-integers] [double-precision floating-point][ieee754] integer.

</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">

</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/constants-float16/max-safe-integer`][@stdlib/constants/float16/max-safe-integer]</span><span class="delimiter">: </span><span class="description">maximum safe half-precision floating-point integer.</span>
-   <span class="package-name">[`@stdlib/constants-float32/max-safe-integer`][@stdlib/constants/float32/max-safe-integer]</span><span class="delimiter">: </span><span class="description">maximum safe single-precision floating-point integer.</span>
-   <span class="package-name">[`@stdlib/constants-float64/min-safe-integer`][@stdlib/constants/float64/min-safe-integer]</span><span class="delimiter">: </span><span class="description">minimum safe double-precision floating-point integer.</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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[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules

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[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/constants-float64-max-safe-integer/main/LICENSE

[safe-integers]: http://www.2ality.com/2013/10/safe-integers.html

[ieee754]: https://en.wikipedia.org/wiki/IEEE_754-1985

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

[@stdlib/constants/float16/max-safe-integer]: https://www.npmjs.com/package/@stdlib/constants-float16-max-safe-integer

[@stdlib/constants/float32/max-safe-integer]: https://www.npmjs.com/package/@stdlib/constants-float32-max-safe-integer

[@stdlib/constants/float64/min-safe-integer]: https://www.npmjs.com/package/@stdlib/constants-float64-min-safe-integer

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