docs: modernize PRNG usage and fix C parameter generation in kumaraswamy/cdf

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Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/kumaraswamy/cdf/README.md

@@ -141,7 +141,7 @@ y = mycdf( 0.3 );
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/array/uniform' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var cdf = require( '@stdlib/stats/base/dists/kumaraswamy/cdf' );
 
@@ -151,12 +151,13 @@ var x;
 var y;
 var i;
 
-for ( i = 0; i < 10; i++ ) {
-    x = randu();
-    a = ( randu()*5.0 ) + EPS;
-    b = ( randu()*5.0 ) + EPS;
-    y = cdf( x, a, b );
-    console.log( 'x: %d, a: %d, b: %d, F(x;a,b): %d', x.toFixed( 4 ), a.toFixed( 4 ), b.toFixed( 4 ), y.toFixed( 4 ) );
+x = uniform( 10, 0.0, 1.0 );
+a = uniform( 10, EPS, 5.0 );
+b = uniform( 10, EPS, 5.0 );
+
+for ( i = 0; i < x.length; i++ ) {
+    y = cdf( x[ i ], a[ i ], b[ i ] );
+    console.log( 'x: %d, a: %d, b: %d, F(x;a,b): %d', x[ i ].toFixed( 4 ), a[ i ].toFixed( 4 ), b[ i ].toFixed( 4 ), y.toFixed( 4 ) );
 }
 ```
 
@@ -229,6 +230,7 @@ double stdlib_base_dists_kumaraswamy_cdf( const double x, const double a, const
 
 ```c
 #include "stdlib/stats/base/dists/kumaraswamy/cdf.h"
+#include "stdlib/constants/float64/eps.h"
 #include <stdlib.h>
 #include <stdio.h>
 
@@ -245,9 +247,9 @@ int main( void ) {
     int i;
 
     for ( i = 0; i < 25; i++ ) {
-        x = random_uniform( 0, 1.0 );
-        a = random_uniform( 0, 5.0 );
-        b = random_uniform( 0, 5.0 );
+        x = random_uniform( 0.0, 1.0 );
+        a = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
+        b = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
         y = stdlib_base_dists_kumaraswamy_cdf( x, a, b );
         printf( "x: %lf, a: %lf, b: %lf, F(x;a,b): %lf\n", x, a, b, y );
     }

lib/node_modules/@stdlib/stats/base/dists/kumaraswamy/cdf/benchmark/benchmark.native.js

@@ -22,8 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var bench = require( '@stdlib/bench' );
-var Float64Array = require( '@stdlib/array/float64' );
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/array/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -49,14 +48,9 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	var i;
 
 	len = 100;
-	x = new Float64Array( len );
-	a = new Float64Array( len );
-	s = new Float64Array( len );
-	for ( i = 0; i < len; i++ ) {
-		x[ i ] = randu();
-		a[ i ] = ( randu()*5.0 ) + EPS;
-		s[ i ] = ( randu()*5.0 ) + EPS;
-	}
+	x = uniform( len, 0.0, 1.0 );
+	a = uniform( len, EPS, 5.0 );
+	s = uniform( len, EPS, 5.0 );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {

lib/node_modules/@stdlib/stats/base/dists/kumaraswamy/cdf/benchmark/c/benchmark.c

@@ -17,6 +17,7 @@
 */
 
 #include "stdlib/stats/base/dists/kumaraswamy/cdf.h"
+#include "stdlib/constants/float64/eps.h"
 #include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
@@ -101,9 +102,9 @@ static double benchmark( void ) {
 	int i;
 
 	for ( i = 0; i < 100; i++ ) {
-		x[ i ] = random_uniform( -10.0, 10.0 );
-		a[ i ] = random_uniform( 0, 10.0 );
-		b[ i ] = random_uniform( a[ i ], a[ i ]+40.0 );
+		x[ i ] = random_uniform( 0.0, 1.0 );
+		a[ i ] = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
+		b[ i ] = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
 	}
 
 	t = tic();

lib/node_modules/@stdlib/stats/base/dists/kumaraswamy/cdf/examples/c/example.c

@@ -17,6 +17,7 @@
 */
 
 #include "stdlib/stats/base/dists/kumaraswamy/cdf.h"
+#include "stdlib/constants/float64/eps.h"
 #include <stdlib.h>
 #include <stdio.h>
 
@@ -33,9 +34,9 @@ int main( void ) {
 	int i;
 
 	for ( i = 0; i < 25; i++ ) {
-        x = random_uniform( 0, 1.0 );
-        a = random_uniform( 0, 5.0 );
-        b = random_uniform( 0, 5.0 );
+		x = random_uniform( 0.0, 1.0 );
+		a = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
+		b = random_uniform( STDLIB_CONSTANT_FLOAT64_EPS, 5.0 );
 		y = stdlib_base_dists_kumaraswamy_cdf( x, a, b );
 		printf( "x: %lf, a: %lf, b: %lf, F(x;a,b): %lf\n", x, a, b, y );
 	}

lib/node_modules/@stdlib/stats/base/dists/kumaraswamy/cdf/examples/index.js

@@ -18,7 +18,7 @@
 
 'use strict';
 
-var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/array/uniform' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var cdf = require( './../lib' );
 
@@ -28,10 +28,11 @@ var x;
 var y;
 var i;
 
-for ( i = 0; i < 10; i++ ) {
-	x = randu();
-	a = ( randu()*5.0 ) + EPS;
-	b = ( randu()*5.0 ) + EPS;
-	y = cdf( x, a, b );
-	console.log( 'x: %d, a: %d, b: %d, F(x;a,b): %d', x.toFixed( 4 ), a.toFixed( 4 ), b.toFixed( 4 ), y.toFixed( 4 ) );
+x = uniform( 10, 0.0, 1.0 );
+a = uniform( 10, EPS, 5.0 );
+b = uniform( 10, EPS, 5.0 );
+
+for ( i = 0; i < x.length; i++ ) {
+	y = cdf( x[ i ], a[ i ], b[ i ] );
+	console.log( 'x: %d, a: %d, b: %d, F(x;a,b): %d', x[ i ].toFixed( 4 ), a[ i ].toFixed( 4 ), b[ i ].toFixed( 4 ), y.toFixed( 4 ) );
 }

lib/node_modules/@stdlib/stats/base/dists/kumaraswamy/cdf/manifest.json

@@ -56,7 +56,8 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/assert/is-nan",
-        "@stdlib/math/base/special/pow"
+        "@stdlib/math/base/special/pow",
+        "@stdlib/constants/float64/eps"
       ]
     },
     {
@@ -72,7 +73,8 @@
       "libpath": [],
       "dependencies": [
         "@stdlib/math/base/assert/is-nan",
-        "@stdlib/math/base/special/pow"
+        "@stdlib/math/base/special/pow",
+        "@stdlib/constants/float64/eps"
       ]
     }
   ]