bench: move random number generation outside the benchmarking loops

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Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/chi/entropy/benchmark/benchmark.js

@@ -21,6 +21,7 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
+var Float64Array = require( '@stdlib/array/float64' );
 var uniform = require( '@stdlib/random/base/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
@@ -31,14 +32,20 @@ var entropy = require( './../lib' );
 // MAIN //
 
 bench( pkg, function benchmark( b ) {
+	var len;
 	var k;
 	var y;
 	var i;
 
+	len = 100;
+	k = new Float64Array( len );
+	for ( i = 0; i < len; i++ ) {
+		k[ i ] = uniform( EPS, 20.0 );
+	}
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		k = uniform( EPS, 20.0 );
-		y = entropy( k );
+		y = entropy( k[ i % len ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}