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# wrap

> Wrap a value on the half-open interval `[min,max)`.

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</section>

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<section class="usage">

## Usage

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

#### wrap( v, min, max )

Wraps a value on the half-open interval `[min,max)`.

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

v = wrap( -3.14, 0.0, 5.0 );
// returns ~1.86

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

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

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

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

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

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

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

If provided `min == max`, the function returns `NaN`.

```javascript
var v = wrap( 3.14, 3.0, 3.0 );
// returns NaN
```

</section>

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## Notes

-   The function does **not** distinguish between positive and negative zero. Where appropriate, the function returns positive zero.

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## Examples

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

```javascript
var discreteUniform = require( '@stdlib/random/base/discrete-uniform' );
var wrap = require( '@stdlib/math/base/special/wrap' );

var min;
var max;
var v;
var i;

for ( i = 0; i < 100; i++ ) {
    min = discreteUniform( 0.0, 10.0 );
    max = discreteUniform( 5.0, 15.0 );
    v = discreteUniform( -20.0, 20.0 );
    console.log( 'wrap(%d,%d,%d) => %d', v, min, max, wrap( v, min, max ) );
}
```

</section>

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* * *

<section class="c">

## C APIs

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</section>

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<section class="usage">

### Usage

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

#### stdlib_base_wrap( v, min, max )

Wraps a value on the half-open interval `[min,max)`.

```c
double v = stdlib_base_wrap( 3.14, 0.0, 5.0 );
// returns 3.14

v = stdlib_base_wrap( -3.14, 0.0, 5.0 );
// returns ~1.86
```

The function accepts the following arguments:

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

```c
double stdlib_base_wrap( const double v, const double min, const double max )
```

</section>

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</section>

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### Examples

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

int main( void ) {
    const double min[] = { 0.0, 0.0, 0.0, 0.0, -3.14 };
    const double max[] = { 5.0, 5.0, 5.0, 5.0, -0.0 };
    const double v[] = { 3.14, -3.14, 10.0, -0.0, 0.0 };

    double out;
    int i;
    for ( i = 0; i < 5; i++ ) {
        out = stdlib_base_wrap( v[i], min[i], max[i] );
        printf( "wrap(%lf,%lf,%lf) => %lf\n", v[i], min[i], max[i], out );
    }
}
```

</section>

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</section>

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</section>

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* * *

## See Also

-   <span class="package-name">[`@stdlib/math/base/special/clamp`][@stdlib/math/base/special/clamp]</span><span class="delimiter">: </span><span class="description">restrict a double-precision floating-point number to a specified range.</span>

</section>

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[@stdlib/math/base/special/clamp]: https://github.com/stdlib-js/math/tree/main/base/special/clamp

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</section>

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