bench: refactor random number generation in stats/base/dists/studentized-range

lib/node_modules/@stdlib/stats/base/dists/studentized-range/cdf/benchmark/benchmark.js

@@ -21,27 +21,35 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pkg = require( './../package.json' ).name;
 var cdf = require( './../lib' );
+var uniform = require('@stdlib/random/base/uniform')
 
 
 // MAIN //
 
 bench( pkg, function benchmark( b ) {
+	var len;
 	var v;
 	var r;
 	var q;
 	var y;
 	var i;
 
+	len = 100;
+	q = new Float64Array( len );
+	r = new Float64Array( len );
+	v = new Float64Array( len );
+	for( i = 0; i < len; i++ ) {
+		q[i] = uniform( 0.0, 12.0 );
+		r[i] = uniform( 2.0, 20.0 );
+		v[i] = uniform( 2.0, 20.0 );
+	}
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		q = randu() * 12.0;
-		r = ( randu()*20.0 ) + 2.0;
-		v = ( randu()*20.0 ) + 2.0;
-		y = cdf( q, r, v );
+		y = cdf( q[ i % len ], r[ i % len ], v[ i % len ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}
@@ -56,20 +64,25 @@ bench( pkg, function benchmark( b ) {
 
 bench( pkg+':factory', function benchmark( b ) {
 	var mycdf;
+	var len;
 	var r;
 	var q;
 	var v;
 	var y;
 	var i;
 
+	len = 100;
 	v = 5.0;
 	r = 3.0;
+	q = new Float64Array( len );
 	mycdf = cdf.factory( v, r );
+	for ( i = 0; i < len; i++ ) {
+		q[i] = uniform( 0.0, 1.0 );
+	}
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		q = randu();
-		y = mycdf( q );
+		y = mycdf( q[ i % len ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}

lib/node_modules/@stdlib/stats/base/dists/studentized-range/quantile/benchmark/benchmark.js

@@ -21,27 +21,36 @@
 // MODULES //
 
 var bench = require( '@stdlib/bench' );
-var randu = require( '@stdlib/random/base/randu' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var pkg = require( './../package.json' ).name;
 var quantile = require( './../lib' );
+const uniform = require('@stdlib/random/base/uniform');
 
 
 // MAIN //
 
 bench( pkg, function benchmark( b ) {
+	var len;
 	var v;
 	var r;
 	var p;
 	var y;
 	var i;
 
+
+	len = 100;
+	p = new Float64Array( len );
+	r = new Float64Array( len );
+	v = new Float64Array( len );
+	for( i = 0; i < len; i++ ) {
+		p[i] = uniform( 0.0, 1.0 );
+		r[i] = uniform( 2.0, 20.0 );
+		v[i] = uniform( 2.0, 20.0 );
+	}
+
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		p = randu();
-		r = ( randu()*20.0 ) + 2.0;
-		v = ( randu()*20.0 ) + 2.0;
-		y = quantile( p, r, v );
+		y = quantile( p[ i % len ], r[ i % len ], v[ i % len ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}
@@ -56,20 +65,25 @@ bench( pkg, function benchmark( b ) {
 
 bench( pkg+':factory', function benchmark( b ) {
 	var myquantile;
+	var len;
 	var r;
 	var p;
 	var v;
 	var y;
 	var i;
 
+	len = 100;
 	v = 5.0;
 	r = 3.0;
+	p = new Float64Array( len );
 	myquantile = quantile.factory( v, r );
+	for ( i = 0; i < len; i++ ) {
+		p[i] = uniform( 0.0, 1.0 );
+	}
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
-		p = randu();
-		y = myquantile( p );
+		y = myquantile( p[ i % len ] );
 		if ( isnan( y ) ) {
 			b.fail( 'should not return NaN' );
 		}