From b12c7d0c7994cd706a8f226b63d650be212c61a2 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Thu, 10 Sep 2026 06:21:04 +0000
Subject: [PATCH] test: migrate `stats/incr/nanmprod` to ULP-based assertions

Migrate the two relative-tolerance assertion sites in the tests for
`stats/incr/nanmprod` to ULP-difference assertions using
`@stdlib/assert/is-almost-same-value`. Both sites require a minimum
bound of 1 ULP.

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_019Fdzvd3XioK2mzPYas59Hf

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: skipped
  - task: lint_markdown_pkg_readmes
    status: na
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    status: na
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    status: passed
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  - task: lint_c_src
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  - task: lint_c_examples
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  - task: lint_c_benchmarks
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  - task: lint_typescript_declarations
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  - task: lint_typescript_tests
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  - task: lint_license_headers
    status: passed
---
---
 .../@stdlib/stats/incr/nanmprod/test/test.js  | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/incr/nanmprod/test/test.js b/lib/node_modules/@stdlib/stats/incr/nanmprod/test/test.js
index 3514a045af7d..c1456ac26ff7 100644
--- a/lib/node_modules/@stdlib/stats/incr/nanmprod/test/test.js
+++ b/lib/node_modules/@stdlib/stats/incr/nanmprod/test/test.js
@@ -21,9 +21,9 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPSILON = require( '@stdlib/constants/float64/eps' );
 var isEven = require( '@stdlib/math/base/assert/is-even' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );
@@ -31,7 +31,6 @@ var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
 var normal = require( '@stdlib/random/base/normal' );
 var randu = require( '@stdlib/random/base/randu' );
 var ldexp = require( '@stdlib/math/base/special/ldexp' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var incrnanmprod = require( './../lib' );
 
 
@@ -190,8 +189,7 @@ tape( 'the accumulator function can return a result which overflows', function t
 
 tape( 'overflow may be transient', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
+	var actual;
 	var acc;
 	var x;
 	var y;
@@ -209,10 +207,9 @@ tape( 'overflow may be transient', function test( t ) {
 	acc( y );
 	acc( z );
 
-	delta = abs( expected - acc() );
-	tol = EPSILON * abs( expected );
+	actual = acc();
 
-	t.strictEqual( delta <= tol, true, 'within tolerance. Expected: '+expected+'. Actual: '+acc()+'. Delta: '+delta+'. Tol: '+tol+'.' );
+	t.strictEqual( isAlmostSameValue( actual, expected, 1 ), true, 'returns expected value' );
 	t.end();
 });
 
@@ -228,8 +225,7 @@ tape( 'the accumulator function can return a result which underflows', function
 
 tape( 'underflow may be transient', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
+	var actual;
 	var acc;
 	var x;
 	var y;
@@ -250,10 +246,9 @@ tape( 'underflow may be transient', function test( t ) {
 
 	acc( z );
 
-	delta = abs( acc() - expected );
-	tol = EPSILON * abs( expected );
+	actual = acc();
 
-	t.strictEqual( delta <= tol, true, 'within tolerance. Expected: '+expected+'. Actual: '+acc()+'. Delta: '+delta+'. Tol: '+tol+'.' );
+	t.strictEqual( isAlmostSameValue( actual, expected, 1 ), true, 'returns expected value' );
 	t.end();
 });