<!-- @license Apache-2.0 Copyright (c) 2020 The Stdlib Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --> # 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 -->