From 698d6e18bf156d8d2c43f30ba980f1cc43f6934e Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Tue, 13 Oct 2026 18:28:58 +0000
Subject: [PATCH] test: migrate `stats/incr/nanmpcorr2` to ULP-based assertions

Replaces relative tolerance comparisons (`5.0e5 * EPS * abs( expected )`)
with `@stdlib/assert/is-almost-same-value` ULP difference assertions. Each
ULP bound was tightened to the measured minimum which still passes over the
full fixture set.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H1a4NdkAZ2r2TeEPDzDx6Z
---
 .../stats/incr/nanmpcorr2/test/test.js        | 45 +++----------------
 1 file changed, 5 insertions(+), 40 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/incr/nanmpcorr2/test/test.js b/lib/node_modules/@stdlib/stats/incr/nanmpcorr2/test/test.js
index 8e90798cfeb9..04d1d94af8c3 100644
--- a/lib/node_modules/@stdlib/stats/incr/nanmpcorr2/test/test.js
+++ b/lib/node_modules/@stdlib/stats/incr/nanmpcorr2/test/test.js
@@ -21,11 +21,10 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var randu = require( '@stdlib/random/base/randu' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var sqrt = require( '@stdlib/math/base/special/sqrt' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 var zeros = require( '@stdlib/array/base/zeros' );
 var incrnanmpcorr2 = require( './../lib' );
 
@@ -330,13 +329,11 @@ tape( 'the function returns an accumulator function (known means)', function tes
 tape( 'the accumulator function computes a moving squared sample Pearson product-moment correlation coefficient incrementally', function test( t ) {
 	var expected;
 	var actual;
-	var delta;
 	var means;
 	var valid;
 	var data;
 	var acc;
 	var arr;
-	var tol;
 	var d;
 	var N;
 	var M;
@@ -394,13 +391,7 @@ tape( 'the accumulator function computes a moving squared sample Pearson product
 			means = mean( [ 0.0, 0.0 ], arr );
 			expected = pcorr2( arr, means[ 0 ], means[ 1 ], false );
 
-			if ( actual === expected ) {
-				t.strictEqual( actual, expected, 'returns expected value. dataset: '+i+'. window: '+j+'.' );
-			} else {
-				delta = abs( actual - expected );
-				tol = 5.0e5 * EPS * abs( expected );
-				t.strictEqual( delta < tol, true, 'dataset: '+i+'. window: '+j+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
-			}
+			t.strictEqual( isAlmostSameValue( actual, expected, 4834 ), true, 'returns expected value' );
 		}
 	}
 	t.end();
@@ -410,12 +401,10 @@ tape( 'the accumulator function computes a moving squared sample Pearson product
 	var expected;
 	var actual;
 	var means;
-	var delta;
 	var valid;
 	var data;
 	var acc;
 	var arr;
-	var tol;
 	var d;
 	var N;
 	var M;
@@ -473,14 +462,7 @@ tape( 'the accumulator function computes a moving squared sample Pearson product
 
 			expected = pcorr2( arr, means[ 0 ], means[ 1 ], true );
 
-			if ( actual === expected ) {
-				t.strictEqual( actual, expected, 'returns expected value. dataset: '+i+'. step: '+j+'.' );
-			}
-			else {
-				delta = abs( actual - expected );
-				tol = 5.0e5 * EPS * abs( expected );
-				t.strictEqual( delta < tol, true, 'dataset: '+i+'. step: '+j+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
-			}
+			t.strictEqual( isAlmostSameValue( actual, expected, 1857 ), true, 'returns expected value' );
 		}
 	}
 	t.end();
@@ -490,9 +472,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 	var expected;
 	var actual;
 	var means;
-	var delta;
 	var data;
-	var tol;
 	var acc;
 	var W;
 	var N;
@@ -521,13 +501,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 		}
 		means = mean( [ 0.0, 0.0 ], d );
 		expected = pcorr2( d, means[ 0 ], means[ 1 ], false );
-		if ( actual === expected ) {
-			t.strictEqual( actual, expected, 'returns expected value. window: '+i+'.' );
-		} else {
-			delta = abs( actual - expected );
-			tol = 5.0e5 * EPS * abs( expected );
-			t.strictEqual( delta < tol, true, 'window: '+i+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( actual, expected, 2 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -536,9 +510,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 	var expected;
 	var actual;
 	var means;
-	var delta;
 	var valid;
-	var tol;
 	var acc;
 	var arr;
 	var d;
@@ -602,14 +574,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 		means = mean( [ 0.0, 0.0 ], arr );
 		expected = pcorr2( arr, means[ 0 ], means[ 1 ], false );
 
-		if ( actual === expected ) {
-			t.strictEqual( actual, expected, 'returns expected value. step: '+i+'.' );
-		}
-		else {
-			delta = abs( actual - expected );
-			tol = 5.0e5 * EPS * abs( expected );
-			t.strictEqual( delta < tol, true, 'step: '+i+'. expected: '+expected+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( actual, expected, 4 ), true, 'returns expected value' );
 	}
 	t.end();
 });