From c907a4464c76d487cb6d6d9fa46a10a1756febc1 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Mon, 10 Aug 2026 21:27:49 +0000
Subject: [PATCH] test: migrate `math/base/special/cospi` to ULP-based
 assertions

Replaces relative-tolerance comparisons in the fixture-driven test
with `@stdlib/assert/is-almost-same-value`, matching the pattern
established for other `math/base/special` packages.

Ref: https://github.com/stdlib-js/stdlib/issues/11352

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RXRe7DKMnJDk6MHLbuqWgk

---
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
  - task: lint_markdown_docs
    status: na
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
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  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---
---
 .../@stdlib/math/base/special/cospi/test/test.js    | 13 ++-----------
 .../math/base/special/cospi/test/test.native.js     | 13 ++-----------
 2 files changed, 4 insertions(+), 22 deletions(-)

diff --git a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js
index 37ab8dcd7217..d7fa9e88d339 100644
--- a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.js
@@ -21,12 +21,11 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var incrspace = require( '@stdlib/array/base/incrspace' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var isPositiveZero = require( '@stdlib/assert/is-positive-zero' );
 var cospi = require( './../lib' );
@@ -134,8 +133,6 @@ tape( 'the function is even', function test( t ) {
 
 tape( 'the function computes `cos(πx)`', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -144,13 +141,7 @@ tape( 'the function computes `cos(πx)`', function test( t ) {
 	expected = decimals.expected;
 	for ( i = 0; i < x.length; i++ ) {
 		y = cospi( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 1.0 * EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js
index c048e8f82896..3ad0d32ec16a 100644
--- a/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/cospi/test/test.native.js
@@ -22,12 +22,11 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var incrspace = require( '@stdlib/array/base/incrspace' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var pow = require( '@stdlib/math/base/special/pow' );
 var isPositiveZero = require( '@stdlib/assert/is-positive-zero' );
 var tryRequire = require( '@stdlib/utils/try-require' );
@@ -143,8 +142,6 @@ tape( 'the function is even', opts, function test( t ) {
 
 tape( 'the function computes `cos(πx)`', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -153,13 +150,7 @@ tape( 'the function computes `cos(πx)`', opts, function test( t ) {
 	expected = decimals.expected;
 	for ( i = 0; i < x.length; i++ ) {
 		y = cospi( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 1.0 * EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. y: '+y+'. E: '+expected[i]+'. tol: '+tol+'. Δ: '+delta+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });