From ae470e27a05b8efaf5f702ab7f790cf98c188699 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Mon, 5 Oct 2026 18:24:23 +0000
Subject: [PATCH] test: migrate `stats/base/dists/gamma/entropy` to ULP-based
 assertions

Replace computed relative tolerance comparisons with ULP-based
assertions using `@stdlib/assert/is-almost-same-value`. The ULP bound
was tightened to the measured minimum of 188416 ULPs for both the
JavaScript and native implementations over the full 200-case fixture
set.

Ref: https://github.com/stdlib-js/stdlib/issues/11352

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H6NQ1XGDBg2vzphpvakfVr
---
 .../stats/base/dists/gamma/entropy/test/test.js      | 12 ++----------
 .../base/dists/gamma/entropy/test/test.native.js     | 12 ++----------
 2 files changed, 4 insertions(+), 20 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.js b/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.js
index a22825fbd1a6..3f18f31a022a 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.js
@@ -21,7 +21,7 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var abs = require( '@stdlib/math/base/special/abs' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
@@ -95,10 +95,8 @@ tape( 'if provided `beta <= 0`, the function returns `NaN`', function test( t )
 
 tape( 'the function returns the differential entropy of a gamma distribution', function test( t ) {
 	var expected;
-	var delta;
 	var alpha;
 	var beta;
-	var tol;
 	var i;
 	var y;
 
@@ -107,13 +105,7 @@ tape( 'the function returns the differential entropy of a gamma distribution', f
 	beta = data.beta;
 	for ( i = 0; i < expected.length; i++ ) {
 		y = entropy( alpha[i], beta[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'alpha: '+alpha[i]+', beta: '+beta[i]+', y: '+y+', expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1e-10 * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. alpha: '+alpha[i]+'. beta: '+beta[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 188416 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.native.js b/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.native.js
index ca448ff486cf..2afe3647abc0 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.native.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/gamma/entropy/test/test.native.js
@@ -22,7 +22,7 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var abs = require( '@stdlib/math/base/special/abs' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
@@ -104,10 +104,8 @@ tape( 'if provided `beta <= 0`, the function returns `NaN`', opts, function test
 
 tape( 'the function returns the differential entropy of a gamma distribution', opts, function test( t ) {
 	var expected;
-	var delta;
 	var alpha;
 	var beta;
-	var tol;
 	var i;
 	var y;
 
@@ -116,13 +114,7 @@ tape( 'the function returns the differential entropy of a gamma distribution', o
 	beta = data.beta;
 	for ( i = 0; i < expected.length; i++ ) {
 		y = entropy( alpha[i], beta[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'alpha: '+alpha[i]+', beta: '+beta[i]+', y: '+y+', expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1e-10 * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. alpha: '+alpha[i]+'. beta: '+beta[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 188416 ), true, 'returns expected value' );
 	}
 	t.end();
 });