From f045e25fc87552850175084e991ffc334586fe3b Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Fri, 28 Aug 2026 14:29:33 +0000
Subject: [PATCH] test: migrate `stats/base/dists/betaprime/kurtosis` to
 ULP-based assertions

Replace the relative tolerance assertions in the fixture loops of
`test/test.js` and `test/test.native.js` with `isAlmostSameValue`
ULP difference assertions. The ULP bound was tightened to the
measured minimum of 369 for both the JavaScript and C
implementations.

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_013gUyuE14QfhKCjNXJ7RSJj
---
 .../base/dists/betaprime/kurtosis/test/test.js      | 13 ++-----------
 .../dists/betaprime/kurtosis/test/test.native.js    | 13 ++-----------
 2 files changed, 4 insertions(+), 22 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.js b/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.js
index c8200ac103ba..63a814fa19ed 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.js
@@ -21,11 +21,10 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 var kurtosis = require( './../lib' );
 
 
@@ -111,10 +110,8 @@ tape( 'if provided `beta <= 4`, the function returns `NaN`', function test( t )
 
 tape( 'the function returns the excess kurtosis of a beta prime distribution', function test( t ) {
 	var expected;
-	var delta;
 	var alpha;
 	var beta;
-	var tol;
 	var i;
 	var y;
 
@@ -123,13 +120,7 @@ tape( 'the function returns the excess kurtosis of a beta prime distribution', f
 	beta = data.beta;
 	for ( i = 0; i < expected.length; i++ ) {
 		y = kurtosis( 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 = 320.0 * EPS * 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 ], 369 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.native.js b/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.native.js
index 52d0a23ead30..834304d69bf6 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.native.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/betaprime/kurtosis/test/test.native.js
@@ -22,12 +22,11 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 
 
 // VARIABLES //
@@ -120,10 +119,8 @@ tape( 'if provided `beta <= 4`, the function returns `NaN`', opts, function test
 
 tape( 'the function returns the excess kurtosis of a beta prime distribution', opts, function test( t ) {
 	var expected;
-	var delta;
 	var alpha;
 	var beta;
-	var tol;
 	var i;
 	var y;
 
@@ -132,13 +129,7 @@ tape( 'the function returns the excess kurtosis of a beta prime distribution', o
 	beta = data.beta;
 	for ( i = 0; i < expected.length; i++ ) {
 		y = kurtosis( 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 = 320.0 * EPS * 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 ], 369 ), true, 'returns expected value' );
 	}
 	t.end();
 });