From d2f811b75a5b68d759e535b345f1f09aaf31dfec Mon Sep 17 00:00:00 2001
From: Athan Reines <kgryte@gmail.com>
Date: Sun, 30 Aug 2026 02:19:34 +0000
Subject: [PATCH] test: migrate `stats/base/dists/planck/skewness` to ULP-based
 assertions

Replaces relative tolerance assertions with ULP difference assertions
using `@stdlib/assert/is-almost-same-value`. The ULP bound was tightened
to the measured minimum of 1 ULP over the full Python fixture set.

Ref: https://github.com/stdlib-js/stdlib/issues/11352
---
 .../stats/base/dists/planck/skewness/test/test.js | 13 ++-----------
 .../dists/planck/skewness/test/test.native.js     | 15 +++------------
 2 files changed, 5 insertions(+), 23 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.js b/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.js
index c7d06df9f620..593da478a136 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.js
@@ -21,9 +21,8 @@
 // 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 EPS = require( '@stdlib/constants/float64/eps' );
 var skewness = require( './../lib' );
 
 
@@ -61,8 +60,6 @@ tape( 'if provided a shape parameter `lambda` which is nonpositive, the function
 tape( 'the function returns the skewness of a Planck distribution', function test( t ) {
 	var expected;
 	var lambda;
-	var delta;
-	var tol;
 	var i;
 	var y;
 
@@ -70,13 +67,7 @@ tape( 'the function returns the skewness of a Planck distribution', function tes
 	lambda = data.lambda;
 	for ( i = 0; i < expected.length; i++ ) {
 		y = skewness( lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'lambda: '+lambda[ i ]+', y: '+y+', expected: '+expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. lambda: '+lambda[ i ]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.native.js b/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.native.js
index 597447a68175..66401c4fdc70 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.native.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/planck/skewness/test/test.native.js
@@ -22,10 +22,9 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
-var EPS = require( '@stdlib/constants/float64/eps' );
+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' );
 
 
 // FIXTURES //
@@ -70,8 +69,6 @@ tape( 'if provided a shape parameter `lambda` which is nonpositive, the function
 tape( 'the function returns the skewness of a Planck distribution', opts, function test( t ) {
 	var expected;
 	var lambda;
-	var delta;
-	var tol;
 	var i;
 	var y;
 
@@ -79,13 +76,7 @@ tape( 'the function returns the skewness of a Planck distribution', opts, functi
 	lambda = data.lambda;
 	for ( i = 0; i < expected.length; i++ ) {
 		y = skewness( lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'lambda: '+lambda[ i ]+', y: '+y+', expected: '+expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. lambda: '+lambda[ i ]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });