From 5389c0e1858a7781eee2e594967ab71a3d15bf1c Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Tue, 26 May 2026 00:21:33 +0000
Subject: [PATCH] refactor: replace `isProbability` with inline range check in
 `stats/base/dists/bernoulli/mgf`
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Normalize the probability-range validation in `lib/main.js` and `lib/factory.js`
to the inline form `isnan( p ) || p < 0.0 || p > 1.0` used by every other member
of the `stats/base/dists/bernoulli` namespace (12/13 siblings; 92.3% conformance).
Cross-namespace, the same inline form is used by 20/22 `stats/base/dists/*/mgf`
packages (90.9%), so the previous `!isProbability(p)` form is also a minority
across the wider `stats/base/dists` family.

Behavior preserved: `isProbability(x)` returns `x >= 0.0 && x <= 1.0`, so
`!isProbability(p)` and `isnan(p) || p < 0.0 || p > 1.0` agree on NaN, ±Infinity,
and all finite inputs. The `@stdlib/math/base/assert/is-probability` import is
removed from both files since it is no longer used.

Manual smoke-tested against the existing `test/test.mgf.js` boundary cases
(`NaN`, ±Infinity, `2.0`, `-0.5` for `p`); all return `NaN` as before.
---
 .../@stdlib/stats/base/dists/bernoulli/mgf/lib/factory.js | 7 +++++--
 .../@stdlib/stats/base/dists/bernoulli/mgf/lib/main.js    | 8 ++++++--
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/factory.js b/lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/factory.js
index c73e657ed500..6a53d276e320 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/factory.js
+++ b/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;
diff --git a/lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/main.js b/lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/main.js
index 9c37a1e69abc..15c6c90ceed7 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/bernoulli/mgf/lib/main.js
+++ b/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 ) );