From 39277600ea96bbaf83b5a81c688b9f45a16ca062 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Mon, 27 Jul 2026 21:37:54 +0000
Subject: [PATCH] test: migrate `math/base/special/cosd` to ULP-based testing

Resolves a part of #11352.
---
 .../math/base/special/cosd/test/test.js       | 27 ++++---------------
 .../base/special/cosd/test/test.native.js     | 27 ++++---------------
 2 files changed, 10 insertions(+), 44 deletions(-)

diff --git a/lib/node_modules/@stdlib/math/base/special/cosd/test/test.js b/lib/node_modules/@stdlib/math/base/special/cosd/test/test.js
index 15e611da7460..a623d54c84b3 100644
--- a/lib/node_modules/@stdlib/math/base/special/cosd/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cosd/test/test.js
@@ -21,11 +21,10 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
-var EPS = require( '@stdlib/constants/float64/eps' );
-var PINF = require( '@stdlib/constants/float64/pinf' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var cosd = require( './../lib' );
 
 
@@ -51,8 +50,6 @@ tape( 'if provided a `NaN`, the function returns `NaN`', function test( t ) {
 
 tape( 'the function computes the cosine of an angle measured in degrees (negative values)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -62,21 +59,13 @@ tape( 'the function computes the cosine of an angle measured in degrees (negativ
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = cosd( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 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();
 });
 
 tape( 'the function computes the cosine of an angle measured in degrees (positive values)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -86,13 +75,7 @@ tape( 'the function computes the cosine of an angle measured in degrees (positiv
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = cosd( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 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/cosd/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/cosd/test/test.native.js
index 34023bf8ceb5..382a07f5a03f 100644
--- a/lib/node_modules/@stdlib/math/base/special/cosd/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/cosd/test/test.native.js
@@ -22,11 +22,10 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
-var EPS = require( '@stdlib/constants/float64/eps' );
-var PINF = require( '@stdlib/constants/float64/pinf' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 
 
@@ -60,8 +59,6 @@ tape( 'if provided a `NaN`, the function returns `NaN`', opts, function test( t
 
 tape( 'the function computes the cosine of an angle measured in degrees (negative values)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -71,21 +68,13 @@ tape( 'the function computes the cosine of an angle measured in degrees (negativ
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = cosd( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 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();
 });
 
 tape( 'the function computes the cosine of an angle measured in degrees (positive values)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -95,13 +84,7 @@ tape( 'the function computes the cosine of an angle measured in degrees (positiv
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = cosd( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 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();
 });