chore: address commit comment

lib/node_modules/@stdlib/stats/base/dists/gumbel/pdf/README.md

@@ -169,8 +169,8 @@ for ( i = 0; i < 10; i++ ) {
 Evaluates the [probability density function][pdf] (PDF) for a [Gumbel][gumbel-distribution] distribution with parameters `mu` (location parameter) and `beta` (scale parameter).
 
 ```c
-double out = stdlib_base_dists_gumbel_pdf( 2.0, 3.0 );
-// returns ~0.199
+double out = stdlib_base_dists_gumbel_pdf( 0.0, 0.0, 2.0 );
+// returns ~0.184
 ```
 
 The function accepts the following arguments:

lib/node_modules/@stdlib/stats/base/dists/gumbel/pdf/benchmark/benchmark.native.js

@@ -23,7 +23,7 @@
 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/base/uniform' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -53,9 +53,9 @@ bench( pkg+'::native', opts, function benchmark( b ) {
 	mu = new Float64Array( len );
 	x = new Float64Array( len );
 	for ( i = 0; i < len; i++ ) {
-		x[ i ] = ( randu()*100.0 ) - 100.0;
-		mu[ i ] = ( randu()*100.0 ) - 50.0;
-		beta[ i ] = ( randu()*20.0 ) + EPS;
+		x[ i ] = uniform( -100.0, 100.0 );
+		mu[ i ] = uniform( -50.0, 100.0 );
+		beta[ i ] = uniform( EPS, 20.0 );
 	}
 
 	b.tic();

lib/node_modules/@stdlib/stats/base/dists/gumbel/pdf/src/main.c

@@ -47,5 +47,5 @@ double stdlib_base_dists_gumbel_pdf( const double x, const double mu, const doub
 		return 0.0;
 	}
 	z = ( x - mu ) / beta;
-	return ( 1.0 / beta ) * stdlib_base_exp( -z -stdlib_base_exp( -z ) );
+	return ( 1.0 / beta ) * stdlib_base_exp( -z - stdlib_base_exp( -z ) );
 }