bench: use single-precision utility

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

Author: kgryte

lib/node_modules/@stdlib/math/base/special/fast/absf/benchmark/benchmark.js

@@ -22,7 +22,7 @@
 
 var bench = require( '@stdlib/bench' );
 var uniform = require( '@stdlib/random/array/uniform' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
 var pkg = require( './../package.json' ).name;
 var absf = require( './../lib' );
 
@@ -41,12 +41,12 @@ bench( pkg, function benchmark( b ) {
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
 		y = absf( x[ i % x.length ] );
-		if ( isnan( y ) ) {
+		if ( isnanf( y ) ) {
 			b.fail( 'should not return NaN' );
 		}
 	}
 	b.toc();
-	if ( isnan( y ) ) {
+	if ( isnanf( y ) ) {
 		b.fail( 'should not return NaN' );
 	}
 	b.pass( 'benchmark finished' );