From 91423cfdca5ef7d40e50e78b699d016f9b387a2c Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Sat, 25 Jul 2026 09:08:17 +0000
Subject: [PATCH] test: migrate `math/base/special/tanh` to ULP-based testing

Ref: https://github.com/stdlib-js/stdlib/issues/11352
---
 .../math/base/special/tanh/test/test.js       | 53 +++----------------
 .../base/special/tanh/test/test.native.js     | 53 +++----------------
 2 files changed, 12 insertions(+), 94 deletions(-)

diff --git a/lib/node_modules/@stdlib/math/base/special/tanh/test/test.js b/lib/node_modules/@stdlib/math/base/special/tanh/test/test.js
index 2ff5824f9c92..6d77a20c78cb 100644
--- a/lib/node_modules/@stdlib/math/base/special/tanh/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/tanh/test/test.js
@@ -26,8 +26,7 @@ var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );
 var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
 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 isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var tanh = require( './../lib' );
 
 
@@ -50,8 +49,6 @@ tape( 'main export is a function', function test( t ) {
 
 tape( 'the function computes the hyperbolic tangent', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -61,21 +58,13 @@ tape( 'the function computes the hyperbolic tangent', function test( t ) {
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 1.7 * EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 2 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (tiny negative)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -85,21 +74,13 @@ tape( 'the function computes the hyperbolic tangent (tiny negative)', function t
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (tiny positive)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -109,21 +90,13 @@ tape( 'the function computes the hyperbolic tangent (tiny positive)', function t
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (large negative)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -133,21 +106,13 @@ tape( 'the function computes the hyperbolic tangent (large negative)', function
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (large positive)', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -157,13 +122,7 @@ tape( 'the function computes the hyperbolic tangent (large positive)', function
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/math/base/special/tanh/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/tanh/test/test.native.js
index c4adb678540a..3cd5a9aaf649 100644
--- a/lib/node_modules/@stdlib/math/base/special/tanh/test/test.native.js
+++ b/lib/node_modules/@stdlib/math/base/special/tanh/test/test.native.js
@@ -28,8 +28,7 @@ var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
 var tryRequire = require( '@stdlib/utils/try-require' );
-var EPS = require( '@stdlib/constants/float64/eps' );
-var abs = require( '@stdlib/math/base/special/abs' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 
 
 // FIXTURES //
@@ -59,8 +58,6 @@ tape( 'main export is a function', opts, function test( t ) {
 
 tape( 'the function computes the hyperbolic tangent', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -70,21 +67,13 @@ tape( 'the function computes the hyperbolic tangent', opts, function test( t ) {
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = 1.7 * EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 2 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (tiny negative)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -94,21 +83,13 @@ tape( 'the function computes the hyperbolic tangent (tiny negative)', opts, func
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (tiny positive)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -118,21 +99,13 @@ tape( 'the function computes the hyperbolic tangent (tiny positive)', opts, func
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (large negative)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -142,21 +115,13 @@ tape( 'the function computes the hyperbolic tangent (large negative)', opts, fun
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function computes the hyperbolic tangent (large positive)', opts, function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -166,13 +131,7 @@ tape( 'the function computes the hyperbolic tangent (large positive)', opts, fun
 
 	for ( i = 0; i < x.length; i++ ) {
 		y = tanh( x[i] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 'x: '+x[i]+'. Expected: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. Value: '+y+'. Expected: '+expected[i]+'. Tolerance: '+tol+'.' );
-		}
+		t.strictEqual( y, expected[ i ], 'returns expected value' );
 	}
 	t.end();
 });