refactor: added include in main.c and fixed the JS benchmark number generation

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Author: anandkaranubc

lib/node_modules/@stdlib/stats/base/dists/negative-binomial/mgf/benchmark/benchmark.js

@@ -24,6 +24,7 @@ var bench = require( '@stdlib/bench' );
 var ln = require( '@stdlib/math/base/special/ln' );
 var ceil = require( '@stdlib/math/base/special/ceil' );
 var randu = require( '@stdlib/random/base/randu' );
+var uniform = require( '@stdlib/random/base/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var pkg = require( './../package.json' ).name;
@@ -42,7 +43,7 @@ bench( pkg, function benchmark( b ) {
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {
 		r = ceil( randu()*100.0 );
-		p = ( randu()*1.0 ) + EPS;
+		p = uniform( EPS, 1.0 );
 		t = randu() * -ln( p );
 		y = mgf( t, r, p );
 		if ( isnan( y ) ) {

lib/node_modules/@stdlib/stats/base/dists/negative-binomial/mgf/benchmark/benchmark.native.js

@@ -24,7 +24,9 @@ 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/base/uniform' );
 var ceil = require( '@stdlib/math/base/special/ceil' );
+var ln = require( '@stdlib/math/base/special/ln' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var EPS = require( '@stdlib/constants/float64/eps' );
@@ -55,9 +57,9 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	p = new Float64Array( len );
 
 	for ( i = 0; i < len; i++ ) {
-		t[ i ] = randu() * -2.0; // t values must be negative
-		r[ i ] = ceil( randu() * 100.0 ); // r values must be positive integers
-		p[ i ] = ( randu() * (1.0 - EPS) ) + EPS; // p values in (0,1)
+		p[ i ] = uniform( EPS, 1.0 );
+		t[ i ] = randu() * -ln( p );
+		r[ i ] = ceil( randu()*100.0 );
 	}
 
 	b.tic();

lib/node_modules/@stdlib/stats/base/dists/negative-binomial/mgf/src/main.c

@@ -20,6 +20,7 @@
 #include "stdlib/math/base/special/exp.h"
 #include "stdlib/math/base/special/ln.h"
 #include "stdlib/math/base/special/pow.h"
+#include "stdlib/stats/base/dists/negative-binomial/mgf.h"
 
 /**
 * Evaluates the moment-generating function (MGF) for a negative binomial distribution.