refactor: replace isProbability with inline range check in stats/base/dists/bernoulli/mgf

PR-URL: #12292
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/factory.js

@@ -21,7 +21,6 @@
 // MODULES //
 
 var constantFunction = require( '@stdlib/utils/constant-function' );
-var isProbability = require( '@stdlib/math/base/assert/is-probability' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var exp = require( '@stdlib/math/base/special/exp' );
 
@@ -40,7 +39,11 @@ var exp = require( '@stdlib/math/base/special/exp' );
 * // returns ~0.855
 */
 function factory( p ) {
-	if ( !isProbability( p ) ) {
+	if (
+		isnan( p ) ||
+		p < 0.0 ||
+		p > 1.0
+	) {
 		return constantFunction( NaN );
 	}
 	return mgf;

lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/main.js

@@ -20,7 +20,6 @@
 
 // MODULES //
 
-var isProbability = require( '@stdlib/math/base/assert/is-probability' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var exp = require( '@stdlib/math/base/special/exp' );
 
@@ -59,7 +58,12 @@ var exp = require( '@stdlib/math/base/special/exp' );
 * // returns NaN
 */
 function mgf( t, p ) {
-	if ( isnan( t ) || !isProbability( p ) ) {
+	if (
+		isnan( t ) ||
+		isnan( p ) ||
+		p < 0.0 ||
+		p > 1.0
+	) {
 		return NaN;
 	}
 	return ( 1.0-p ) + ( p * exp( t ) );