From 2d3b6c58c92b0e047b4212edf84cc819bbfc36d7 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Fri, 21 Aug 2026 22:18:34 +0000
Subject: [PATCH] test: migrate `stats/base/dists/poisson/mgf` to ULP-based
 assertions

Replaces the relative-tolerance assertions in the `stats/base/dists/poisson/mgf`
test files with ULP-based assertions using
`@stdlib/assert/is-almost-same-value`. The measured maximum ULP difference
over the full Julia fixture set is 0, so the assertions use a bound of 0 ULP.

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

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WqLxC1CYmvaZzPBjqzzu6o
---
 .../dists/poisson/mgf/test/test.factory.js    | 33 +++----------------
 .../base/dists/poisson/mgf/test/test.mgf.js   | 33 +++----------------
 .../dists/poisson/mgf/test/test.native.js     | 33 +++----------------
 3 files changed, 12 insertions(+), 87 deletions(-)

diff --git a/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.factory.js b/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.factory.js
index 78efb1fcdd57..9cf6695d7aac 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.factory.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.factory.js
@@ -21,9 +21,8 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 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 factory = require( './../lib/factory.js' );
 
 
@@ -89,9 +88,7 @@ tape( 'if provided a nonpositive `lambda`, the created function always returns `
 tape( 'the created function evaluates the mgf for `x` given small `lambda` values', function test( t ) {
 	var expected;
 	var lambda;
-	var delta;
 	var mgf;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -102,13 +99,7 @@ tape( 'the created function evaluates the mgf for `x` given small `lambda` value
 	for ( i = 0; i < x.length; i++ ) {
 		mgf = factory( lambda[i] );
 		y = mgf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+'. λ: '+lambda[i]+'. y: '+y+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. λ: '+lambda[i]+'. y: '+y+'. E: '+expected[i]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -116,9 +107,7 @@ tape( 'the created function evaluates the mgf for `x` given small `lambda` value
 tape( 'the created function evaluates the mgf for `x` given medium `lambda` values', function test( t ) {
 	var expected;
 	var lambda;
-	var delta;
 	var mgf;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -129,13 +118,7 @@ tape( 'the created function evaluates the mgf for `x` given medium `lambda` valu
 	for ( i = 0; i < x.length; i++ ) {
 		mgf = factory( lambda[i] );
 		y = mgf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+'. λ: '+lambda[i]+'. y: '+y+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. λ: '+lambda[i]+'. y: '+y+'. E: '+expected[i]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -143,9 +126,7 @@ tape( 'the created function evaluates the mgf for `x` given medium `lambda` valu
 tape( 'the created function evaluates the mgf for `x` given large `lambda` values', function test( t ) {
 	var expected;
 	var lambda;
-	var delta;
 	var mgf;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -156,13 +137,7 @@ tape( 'the created function evaluates the mgf for `x` given large `lambda` value
 	for ( i = 0; i < x.length; i++ ) {
 		mgf = factory( lambda[i] );
 		y = mgf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+'. λ: '+lambda[i]+'. y: '+y+'. E: '+expected[i] );
-		} else {
-			delta = abs( y - expected[i] );
-			tol = EPS * abs( expected[i] );
-			t.ok( delta <= tol, 'within tolerance. x: '+x[i]+'. λ: '+lambda[i]+'. y: '+y+'. E: '+expected[i]+'. Δ: '+delta+'. tol: '+tol+'.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.mgf.js b/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.mgf.js
index a0a650414b95..319adaf41963 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.mgf.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.mgf.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 abs = require( '@stdlib/math/base/special/abs' );
 var exp = require( '@stdlib/math/base/special/exp' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 var mgf = require( './../lib' );
 
 
@@ -81,8 +80,6 @@ tape( 'the function evaluates the mgf for `t` given a small `lambda`', function
 	var expected;
 	var lambda;
 	var values;
-	var delta;
-	var tol;
 	var y;
 	var i;
 
@@ -91,13 +88,7 @@ tape( 'the function evaluates the mgf for `t` given a small `lambda`', function
 	lambda = small.lambda;
 	for ( i = 0; i < values.length; i++ ) {
 		y = mgf( values[ i ], lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 't: ' + values[ i ] + ', lambda: ' + lambda[ i ] + ', y: ' + y + ', expected: ' + expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. t: ' + values[ i ] + '. lambda: ' + lambda[ i ] + '. y: ' + y + '. E: ' + expected[ i ] + '. Δ: ' + delta + '. tol: ' + tol + '.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -106,8 +97,6 @@ tape( 'the function evaluates the mgf for `t` given a medium `lambda`', function
 	var expected;
 	var lambda;
 	var values;
-	var delta;
-	var tol;
 	var y;
 	var i;
 
@@ -116,13 +105,7 @@ tape( 'the function evaluates the mgf for `t` given a medium `lambda`', function
 	lambda = medium.lambda;
 	for ( i = 0; i < values.length; i++ ) {
 		y = mgf( values[ i ], lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 't: ' + values[ i ] + ', lambda: ' + lambda[ i ] + ', y: ' + y + ', expected: ' + expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. t: ' + values[ i ] + '. lambda: ' + lambda[ i ] + '. y: ' + y + '. E: ' + expected[ i ] + '. Δ: ' + delta + '. tol: ' + tol + '.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -131,8 +114,6 @@ tape( 'the function evaluates the mgf for `t` given a large range `lambda`', fun
 	var expected;
 	var values;
 	var lambda;
-	var delta;
-	var tol;
 	var y;
 	var i;
 
@@ -141,13 +122,7 @@ tape( 'the function evaluates the mgf for `t` given a large range `lambda`', fun
 	lambda = large.lambda;
 	for ( i = 0; i < values.length; i++ ) {
 		y = mgf( values[ i ], lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 't: ' + values[ i ] + ', lambda: ' + lambda[ i ] + ', y: ' + y + ', expected: ' + expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. t: ' + values[ i ] + '. lambda: ' + lambda[ i ] + '. y: ' + y + '. E: ' + expected[ i ] + '. Δ: ' + delta + '. tol: ' + tol + '.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.native.js b/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.native.js
index dc32a960af8c..809a6d112ee4 100644
--- a/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.native.js
+++ b/lib/node_modules/@stdlib/stats/base/dists/poisson/mgf/test/test.native.js
@@ -22,13 +22,12 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
-var abs = require( '@stdlib/math/base/special/abs' );
 var exp = require( '@stdlib/math/base/special/exp' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
 var NINF = require( '@stdlib/constants/float64/ninf' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 
 
 // FIXTURES //
@@ -90,8 +89,6 @@ tape( 'the function evaluates the mgf for `t` given a small `lambda`', opts, fun
 	var expected;
 	var lambda;
 	var values;
-	var delta;
-	var tol;
 	var y;
 	var i;
 
@@ -100,13 +97,7 @@ tape( 'the function evaluates the mgf for `t` given a small `lambda`', opts, fun
 	lambda = small.lambda;
 	for ( i = 0; i < values.length; i++ ) {
 		y = mgf( values[ i ], lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 't: ' + values[ i ] + ', lambda: ' + lambda[ i ] + ', y: ' + y + ', expected: ' + expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. t: ' + values[ i ] + '. lambda: ' + lambda[ i ] + '. y: ' + y + '. E: ' + expected[ i ] + '. Δ: ' + delta + '. tol: ' + tol + '.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -115,8 +106,6 @@ tape( 'the function evaluates the mgf for `t` given a medium `lambda`', opts, fu
 	var expected;
 	var lambda;
 	var values;
-	var delta;
-	var tol;
 	var y;
 	var i;
 
@@ -125,13 +114,7 @@ tape( 'the function evaluates the mgf for `t` given a medium `lambda`', opts, fu
 	lambda = medium.lambda;
 	for ( i = 0; i < values.length; i++ ) {
 		y = mgf( values[ i ], lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 't: ' + values[ i ] + ', lambda: ' + lambda[ i ] + ', y: ' + y + ', expected: ' + expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. t: ' + values[ i ] + '. lambda: ' + lambda[ i ] + '. y: ' + y + '. E: ' + expected[ i ] + '. Δ: ' + delta + '. tol: ' + tol + '.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });
@@ -140,8 +123,6 @@ tape( 'the function evaluates the mgf for `t` given a large range `lambda`', opt
 	var expected;
 	var values;
 	var lambda;
-	var delta;
-	var tol;
 	var y;
 	var i;
 
@@ -150,13 +131,7 @@ tape( 'the function evaluates the mgf for `t` given a large range `lambda`', opt
 	lambda = large.lambda;
 	for ( i = 0; i < values.length; i++ ) {
 		y = mgf( values[ i ], lambda[ i ] );
-		if ( y === expected[ i ] ) {
-			t.strictEqual( y, expected[ i ], 't: ' + values[ i ] + ', lambda: ' + lambda[ i ] + ', y: ' + y + ', expected: ' + expected[ i ] );
-		} else {
-			delta = abs( y - expected[ i ] );
-			tol = 1.0 * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. t: ' + values[ i ] + '. lambda: ' + lambda[ i ] + '. y: ' + y + '. E: ' + expected[ i ] + '. Δ: ' + delta + '. tol: ' + tol + '.' );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 0 ), true, 'returns expected value' );
 	}
 	t.end();
 });