test: avoid using 32-bit assertion utility

Signed-off-by: Athan <kgryte@gmail.com>

Author: kgryte

lib/node_modules/@stdlib/constants/float16/nan/test/test.js

@@ -21,7 +21,6 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var FLOAT16_NAN = require( './../lib' );
 
 
@@ -34,6 +33,6 @@ tape( 'main export is a number', function test( t ) {
 });
 
 tape( 'export is equal to NaN', function test( t ) {
-	t.strictEqual( isnanf( FLOAT16_NAN ), true, 'returns expected value' );
+	t.notEqual( FLOAT16_NAN, FLOAT16_NAN, 'returns expected value' );
 	t.end();
 });