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# isNegativeZerof

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

<section class="usage">

## Usage

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

#### isNegativeZerof( x )

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

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

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

</section>

<!-- /.usage -->

<section class="examples">

## Examples

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

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

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

bool = isNegativeZerof( 0.0 );
// returns false

bool = isNegativeZerof( 5.0 );
// returns false

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

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

</section>

<!-- /.examples -->

<section class="links">

</section>

<!-- /.links -->
