npm package: @stdlib/math-base-special-clamp
Description: Restrict a double-precision floating-point number to a specified range.
Author: The Stdlib Authors
Latest version: 0.2.3

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# clamp

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> Restrict a double-precision floating-point number to a specified range.

<!-- 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>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/math-base-special-clamp
```

</section>

<section class="usage">

## Usage

```javascript
var clamp = require( '@stdlib/math-base-special-clamp' );
```

#### clamp( v, min, max )

Restricts a double-precision floating-point number to a specified range.

```javascript
var v = clamp( 3.14, 0.0, 5.0 );
// returns 3.14

v = clamp( -3.14, 0.0, 5.0 );
// returns 0.0

v = clamp( 10.0, 0.0, 5.0 );
// returns 5.0

v = clamp( -0.0, 0.0, 5.0 );
// returns 0.0

v = clamp( 0.0, -3.14, -0.0 );
// returns -0.0
```

If provided `NaN` for any argument, the function returns `NaN`.

```javascript
var v = clamp( NaN, 0.0, 5.0 );
// returns NaN

v = clamp( 0.0, NaN, 5.0 );
// returns NaN

v = clamp( 3.14, 0.0, NaN );
// returns NaN
```

</section>

<!-- /.usage -->

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<section class="notes">

</section>

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<!-- Package usage examples. -->

<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 clamp = require( '@stdlib/math-base-special-clamp' );

var opts = {
    'dtype': 'float64'
};
var min = discreteUniform( 100, 0, 10, opts );
var max = discreteUniform( 100, 5, 15, opts );
var v = discreteUniform( 100, -20, 20, opts );

logEachMap( 'clamp(%d,%d,%d) => %d', v, min, max, clamp );
```

</section>

<!-- /.examples -->

<!-- C interface documentation. -->

* * *

<section class="c">

## C APIs

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<section class="intro">

</section>

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<!-- C usage documentation. -->

<section class="usage">

### Usage

```c
#include "stdlib/math/base/special/clamp.h"
```

#### stdlib_base_clamp( v, min, max )

Restricts a double-precision floating-point number to a specified range.

```c
double y = stdlib_base_clamp( -3.14, 0.0, 5.0 );
// returns 0.0
```

The function accepts the following arguments:

-   **v**: `[in] double` input value.
-   **min**: `[in] double` minimum value.
-   **max**: `[in] double` maximum value.

```c
double stdlib_base_clamp( const double v, const double min, const double max );
```

</section>

<!-- /.usage -->

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<section class="notes">

</section>

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

<section class="examples">

### Examples

```c
#include "stdlib/math/base/special/clamp.h"
#include <stdio.h>

int main( void ) {
    const double x[] = { 3.14, -3.14, 0.0, 0.0/0.0 };

    double y;
    int i;
    for ( i = 0; i < 4; i++ ) {
        y = stdlib_base_clamp( x[ i ], -3.0, 3.0 );
        printf( "clamp(%lf, %lf, %lf) = %lf\n", x[ i ], -3.0, 3.0, y );
    }
}
```

</section>

<!-- /.examples -->

</section>

<!-- /.c -->

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</section>

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* * *

## See Also

-   <span class="package-name">[`@stdlib/math-base/special/clampf`][@stdlib/math/base/special/clampf]</span><span class="delimiter">: </span><span class="description">restrict a single-precision floating-point number to a specified range.</span>
-   <span class="package-name">[`@stdlib/math-base/special/wrap`][@stdlib/math/base/special/wrap]</span><span class="delimiter">: </span><span class="description">wrap a value to the half-open interval \[min,max).</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

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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[@stdlib/math/base/special/clampf]: https://www.npmjs.com/package/@stdlib/math-base-special-clampf

[@stdlib/math/base/special/wrap]: https://www.npmjs.com/package/@stdlib/math-base-special-wrap

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