bench: use single-precision utility

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/stats/base/ndarray/snanmean/benchmark/benchmark.js

@@ -24,7 +24,7 @@ var bench = require( '@stdlib/bench' );
 var uniform = require( '@stdlib/random/base/uniform' );
 var bernoulli = require( '@stdlib/random/base/bernoulli' );
 var filledarrayBy = require( '@stdlib/array/filled-by' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var ndarray = require( '@stdlib/ndarray/base/ctor' );
 var pkg = require( './../package.json' ).name;
@@ -69,12 +69,12 @@ function createBenchmark( len ) {
 		b.tic();
 		for ( i = 0; i < b.iterations; i++ ) {
 			v = snanmean( [ x ] );
-			if ( isnan( v ) ) {
+			if ( isnanf( v ) ) {
 				b.fail( 'should not return NaN' );
 			}
 		}
 		b.toc();
-		if ( isnan( v ) ) {
+		if ( isnanf( v ) ) {
 			b.fail( 'should not return NaN' );
 		}
 		b.pass( 'benchmark finished' );