time-to-botec/squiggle/node_modules/@stdlib/math/base/assert/is-negative-zero/README.md

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# isNegativeZero

> Test if a double-precision floating-point numeric value is negative zero.

<section class="usage">

## Usage

```javascript
var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );
```

#### isNegativeZero( x )

Tests if a double-precision floating-point `numeric` value is negative zero.

```javascript
var bool = isNegativeZero( -0.0 );
// returns true

bool = isNegativeZero( 0.0 );
// returns false
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

```javascript
var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );

var bool = isNegativeZero( -0.0 );
// returns true

bool = isNegativeZero( 0.0 );
// returns false

bool = isNegativeZero( 5.0 );
// returns false

bool = isNegativeZero( -1.0 );
// returns false

bool = isNegativeZero( NaN );
// returns false
```

</section>

<!-- /.examples -->

<section class="links">

</section>

<!-- /.links -->