@stdlib/math-base-assert-is-negative-zero

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

Usage no npm install needed!

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README

isNegativeZero

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

Installation

npm install @stdlib/math-base-assert-is-negative-zero

Usage

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

isNegativeZero( x )

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

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

bool = isNegativeZero( 0.0 );
// returns false

Examples

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

Notice

This package is part of 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, see the main project repository.

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License

See LICENSE.

Copyright

Copyright © 2016-2021. The Stdlib Authors.