From 6370f8991fb649277d55af0d41dd83b1b09bfa2e Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Fri, 7 Aug 2026 10:20:04 +0000
Subject: [PATCH] test: migrate `math/base/special/ahavercos` to ULP-based
 assertions

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_01VNpXjKH6vjcS68tbWubp1g
---
 .../math/base/special/ahavercos/test/test.js  | 22 +++----------------
 .../special/ahavercos/test/test.native.js     | 22 +++----------------
 2 files changed, 6 insertions(+), 38 deletions(-)

diff --git a/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.js b/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.js
index 1479faacdf64..e4fb00392bca 100644
--- a/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.js
@@ -21,9 +21,9 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var randu = require( '@stdlib/random/base/randu' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var ahavercos = require( './../lib' );
 
@@ -44,8 +44,6 @@ tape( 'main export is a function', function test( t ) {
 
 tape( 'the function computes the inverse half-value versed cosine', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -55,21 +53,13 @@ tape( 'the function computes the inverse half-value versed cosine', function tes
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = ahavercos( 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();
 });
 
 tape( 'the function computes the inverse half-value versed cosine (small positive numbers)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -79,13 +69,7 @@ tape( 'the function computes the inverse half-value versed cosine (small positiv
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = ahavercos( 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 ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.native.js
index e477c4394b24..823d3b8e19c5 100644
--- a/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/ahavercos/test/test.native.js
@@ -22,9 +22,9 @@
 
 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 randu = require( '@stdlib/random/base/randu' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var EPS = require( '@stdlib/constants/float64/eps' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 
@@ -53,8 +53,6 @@ tape( 'main export is a function', opts, function test( t ) {
 
 tape( 'the function computes the inverse half-value versed cosine', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -64,21 +62,13 @@ tape( 'the function computes the inverse half-value versed cosine', opts, functi
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = ahavercos( 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();
 });
 
 tape( 'the function computes the inverse half-value versed cosine (small positive numbers)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -88,13 +78,7 @@ tape( 'the function computes the inverse half-value versed cosine (small positiv
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = ahavercos( 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 ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });