isnan

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

Usage

var isnan = require( '@stdlib/math/base/assert/is-nan' );

isnan( x )

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

var bool = isnan( NaN );
// returns true

Examples

var isnan = require( '@stdlib/math/base/assert/is-nan' );

var bool = isnan( NaN );
// returns true

bool = isnan( 5.0 );
// returns false