From 6089ad4967dc9eef42ea8783c09eff2d7e4bb5a5 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Wed, 7 Oct 2026 22:23:30 +0000
Subject: [PATCH] test: migrate `stats/incr/nanmpe` to ULP-based assertions

Migrate the tests for `stats/incr/nanmpe` from relative tolerance
assertions to ULP-based assertions using
`@stdlib/assert/is-almost-same-value`, as proposed in #11352.

Both migrated test cases pass at a ULP bound of `1`, which is the
minimum passing integer value for each.

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_011wXHMLyS4pbZfSTXKCMyoX
---
 .../@stdlib/stats/incr/nanmpe/test/test.js    | 19 +++----------------
 1 file changed, 3 insertions(+), 16 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/incr/nanmpe/test/test.js b/lib/node_modules/@stdlib/stats/incr/nanmpe/test/test.js
index c5b5a60c38e5..692cb8ca2c8b 100644
--- a/lib/node_modules/@stdlib/stats/incr/nanmpe/test/test.js
+++ b/lib/node_modules/@stdlib/stats/incr/nanmpe/test/test.js
@@ -21,9 +21,8 @@
 // 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 EPS = require( '@stdlib/constants/float64/eps' );
 var incrnanmpe = require( './../lib' );
 
 
@@ -49,11 +48,9 @@ tape( 'the initial accumulated value is `null`', function test( t ) {
 tape( 'the accumulator function incrementally computes the mean percentage error, ignoring NaN values', function test( t ) {
 	var expected;
 	var actual;
-	var delta;
 	var data;
 	var acc;
 	var sum;
-	var tol;
 	var cnt;
 	var N;
 	var x;
@@ -83,13 +80,7 @@ tape( 'the accumulator function incrementally computes the mean percentage error
 			cnt += 1;
 			expected = 100.0 * ( sum/cnt );
 		}
-		if ( actual === expected ) {
-			t.strictEqual( actual, expected, 'returns expected value' );
-		} else {
-			delta = abs( expected - actual );
-			tol = 10.0 * EPS * abs( expected );
-			t.strictEqual( delta <= tol, true, 'within tolerance. Actual: '+actual+'. Expected: '+expected+'. Delta: '+delta+'. Tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( actual, expected, 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -97,10 +88,8 @@ tape( 'the accumulator function incrementally computes the mean percentage error
 tape( 'if not provided an input value, the accumulator function returns the current mean percentage error', function test( t ) {
 	var expected;
 	var actual;
-	var delta;
 	var data;
 	var acc;
-	var tol;
 	var i;
 
 	data = [
@@ -117,8 +106,6 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 
 	// Only counting non-NaN: [2.0, 3.0], [3.0, 5.0], [1.0, 10.0]
 	expected = 100.0 / 3.0 * ((1.0/3.0) + (2.0/5.0) + (9.0/10.0));
-	delta = abs( expected - actual );
-	tol = 1.0 * EPS * abs( expected );
-	t.strictEqual( delta <= tol, true, 'within tolerance. Actual: '+actual+'. Expected: '+expected+'. Delta: '+delta + '. Tol: '+tol+'.' );
+	t.strictEqual( isAlmostSameValue( actual, expected, 1 ), true, 'returns expected value' );
 	t.end();
 });