From ce25ebb8051e6453d163ebfd9056b5c6e4ed788a Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Fri, 18 Sep 2026 21:12:45 +0000
Subject: [PATCH] test: migrate `stats/incr/mgmean` to ULP-based assertions

Resolves a part of #11352

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Sk7xXaJe3eAEqJbbExepdj
---
 .../@stdlib/stats/incr/mgmean/test/test.js    | 32 +++----------------
 1 file changed, 4 insertions(+), 28 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/incr/mgmean/test/test.js b/lib/node_modules/@stdlib/stats/incr/mgmean/test/test.js
index bed308f83354..a2aa324c7351 100644
--- a/lib/node_modules/@stdlib/stats/incr/mgmean/test/test.js
+++ b/lib/node_modules/@stdlib/stats/incr/mgmean/test/test.js
@@ -21,9 +21,7 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
-var EPSILON = require( '@stdlib/constants/float64/eps' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var incrmgmean = require( './../lib' );
 
 
@@ -73,9 +71,7 @@ tape( 'the function returns an accumulator function', function test( t ) {
 tape( 'the accumulator function computes a moving geometric mean incrementally', function test( t ) {
 	var expected;
 	var actual;
-	var delta;
 	var data;
-	var tol;
 	var acc;
 	var N;
 	var i;
@@ -100,13 +96,7 @@ tape( 'the accumulator function computes a moving geometric mean incrementally',
 	];
 
 	for ( i = 0; i < N; i++ ) {
-		if ( actual[ i ] === expected[ i ] ) {
-			t.strictEqual( actual[ i ], expected[ i ], 'returns expected value' );
-		} else {
-			delta = abs( expected[ i ] - actual[ i ] );
-			tol = 1.2 * EPSILON * abs( expected[ i ] );
-			t.strictEqual( delta <= tol, true, 'within tolerance. Expected: '+expected[ i ]+'. Actual: '+actual[ i ]+'. Delta: '+delta+'. Tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( actual[ i ], expected[ i ], 2 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -114,10 +104,8 @@ tape( 'the accumulator function computes a moving geometric mean incrementally',
 tape( 'if not provided an input value, the accumulator function returns the current geometric mean', function test( t ) {
 	var expected;
 	var actual;
-	var delta;
 	var data;
 	var acc;
-	var tol;
 	var i;
 
 	data = [ 2.0, 3.0, 5.0 ];
@@ -127,9 +115,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 	}
 	actual = acc();
 	expected = 3.872983346207417; // Note: computed by hand using textbook formula
-	delta = abs( expected - actual );
-	tol = 1.0 * EPSILON * abs( expected );
-	t.strictEqual( delta <= tol, true, 'within tolerance. Expected: '+expected+'. Actual: '+actual+'. Delta: '+delta+'. Tol: '+tol+'.' );
+	t.strictEqual( isAlmostSameValue( actual, expected, 0 ), true, 'returns expected value' );
 	t.end();
 });
 
@@ -141,10 +127,8 @@ tape( 'if data has yet to be provided, the accumulator function returns `null`',
 
 tape( 'if provided `NaN`, the accumulated value is `NaN` for at least `W` invocations', function test( t ) {
 	var expected;
-	var delta;
 	var data;
 	var acc;
-	var tol;
 	var v;
 	var i;
 
@@ -194,15 +178,7 @@ tape( 'if provided `NaN`, the accumulated value is `NaN` for at least `W` invoca
 	];
 	for ( i = 0; i < data.length; i++ ) {
 		v = acc( data[ i ] );
-		if ( isnan( expected[ i ] ) ) {
-			t.strictEqual( isnan( v ), true, 'returns expected value for window '+i );
-		} else if ( v === expected[ i ] ) {
-			t.strictEqual( v, expected[ i ], 'returns expected value for window '+i );
-		} else {
-			delta = abs( expected[ i ] - v );
-			tol = 1.0 * EPSILON * abs( expected[ i ] );
-			t.strictEqual( delta <= tol, true, 'within tolerance for window '+i+'. Expected: '+expected[ i ]+'. Actual: '+v+'. Delta: '+delta+'. Tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( v, expected[ i ], 1 ), true, 'returns expected value for window '+i );
 	}
 	t.end();
 });