From d8d0ea06a6c5008403e1d959f49418d4bc1d3475 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Tue, 28 Jul 2026 21:19:15 +0000
Subject: [PATCH] test: migrate `math/base/special/cotd` to ULP-based testing

Ref: https://github.com/stdlib-js/stdlib/issues/11352
---
 .../math/base/special/cotd/test/test.js       | 27 ++++---------------
 .../base/special/cotd/test/test.native.js     | 27 ++++---------------
 2 files changed, 10 insertions(+), 44 deletions(-)

diff --git a/lib/node_modules/@stdlib/math/base/special/cotd/test/test.js b/lib/node_modules/@stdlib/math/base/special/cotd/test/test.js
index bb4d6e699cd5..b4706c356142 100644
--- a/lib/node_modules/@stdlib/math/base/special/cotd/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cotd/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 PINF = require( '@stdlib/constants/float64/pinf' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
+var PINF = require( '@stdlib/constants/float64/pinf' );
+var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var cotd = require( './../lib' );
 
 
@@ -51,8 +50,6 @@ tape( 'if provided a `NaN`, the function returns `NaN`', function test( t ) {
 
 tape( 'the function computes the cotangent of an angle measured in degrees (negative values)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -66,21 +63,13 @@ tape( 'the function computes the cotangent of an angle measured in degrees (nega
 			t.strictEqual( y, PINF, 'x: '+x[i]+'. E: '+expected[i] );
 			continue;
 		}
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 2.0 * 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 ], 3 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the cotangent of an angle measured in degrees (positive values)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -94,13 +83,7 @@ tape( 'the function computes the cotangent of an angle measured in degrees (posi
 			t.strictEqual( y, PINF, 'x: '+x[i]+'. E: '+expected[i] );
 			continue;
 		}
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 2.0 * 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 ], 3 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/math/base/special/cotd/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/cotd/test/test.native.js
index b0433a4d1583..9d22c91637bf 100644
--- a/lib/node_modules/@stdlib/math/base/special/cotd/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/cotd/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 PINF = require( '@stdlib/constants/float64/pinf' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
+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 cotangent of an angle measured in degrees (negative values)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -75,21 +72,13 @@ tape( 'the function computes the cotangent of an angle measured in degrees (nega
 			t.strictEqual( y, PINF, 'x: '+x[i]+'. E: '+expected[i] );
 			continue;
 		}
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 2.0 * 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 ], 3 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the cotangent of an angle measured in degrees (positive values)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -103,13 +92,7 @@ tape( 'the function computes the cotangent of an angle measured in degrees (posi
 			t.strictEqual( y, PINF, 'x: '+x[i]+'. E: '+expected[i] );
 			continue;
 		}
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 2.0 * 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 ], 3 ), true, 'returns expected value' );
 	}
 	t.end();
 });