diff --git a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.js b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.js
index 526169a16a72..a88e9022ff6c 100644
--- a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.js
+++ b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.js
@@ -23,40 +23,10 @@
 var tape = require( 'tape' );
 var sqrt = require( '@stdlib/math/base/special/sqrt' );
 var Float64Array = require( '@stdlib/array/float64' );
-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 dnrm2 = require( './../lib/dnrm2.js' );
 
 
-// FUNCTIONS //
-
-/**
-* Tests for element-wise approximate equality.
-*
-* @private
-* @param {Object} t - test object
-* @param {Collection} actual - actual values
-* @param {Collection} expected - expected values
-* @param {number} rtol - relative tolerance
-*/
-function isApprox( t, actual, expected, rtol ) {
-	var delta;
-	var tol;
-	var i;
-
-	t.strictEqual( actual.length, expected.length, 'returns expected value' );
-	for ( i = 0; i < expected.length; i++ ) {
-		if ( actual[ i ] === expected[ i ] ) {
-			t.strictEqual( actual[ i ], expected[ i ], 'returns expected value' );
-		} else {
-			delta = abs( actual[ i ] - expected[ i ] );
-			tol = rtol * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. actual: '+actual[ i ]+'. expected: '+expected[ i ]+'. delta: '+delta+'. tol: '+tol+'.' );
-		}
-	}
-}
-
-
 // TESTS //
 
 tape( 'main export is a function', function test( t ) {
@@ -99,17 +69,17 @@ tape( 'the function calculates the L2-norm of a vector', function test( t ) {
 	x = new Float64Array( [ 1.0e150, 1.0e50, 1.0e150, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e150, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.414213562373095e150, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.0e-155, 1.0e50, 1.0e-155, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e50, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.4142135623730952e50, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.4e-154, 1.5e-154, 1.4e-154, 0.0 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 2.4839480006885204e-154, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 2.4839484696748444e-154, 0 ), true, 'returns expected value' );
 
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.native.js b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.native.js
index 0b265ce7667f..76f517866ec4 100644
--- a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.native.js
+++ b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.dnrm2.native.js
@@ -24,8 +24,7 @@ var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
 var sqrt = require( '@stdlib/math/base/special/sqrt' );
 var Float64Array = require( '@stdlib/array/float64' );
-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 tryRequire = require( '@stdlib/utils/try-require' );
 
 
@@ -37,35 +36,6 @@ var opts = {
 };
 
 
-// FUNCTIONS //
-
-/**
-* Tests for element-wise approximate equality.
-*
-* @private
-* @param {Object} t - test object
-* @param {Collection} actual - actual values
-* @param {Collection} expected - expected values
-* @param {number} rtol - relative tolerance
-*/
-function isApprox( t, actual, expected, rtol ) {
-	var delta;
-	var tol;
-	var i;
-
-	t.strictEqual( actual.length, expected.length, 'returns expected value' );
-	for ( i = 0; i < expected.length; i++ ) {
-		if ( actual[ i ] === expected[ i ] ) {
-			t.strictEqual( actual[ i ], expected[ i ], 'returns expected value' );
-		} else {
-			delta = abs( actual[ i ] - expected[ i ] );
-			tol = rtol * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. actual: '+actual[ i ]+'. expected: '+expected[ i ]+'. delta: '+delta+'. tol: '+tol+'.' );
-		}
-	}
-}
-
-
 // TESTS //
 
 tape( 'main export is a function', opts, function test( t ) {
@@ -106,17 +76,17 @@ tape( 'the function calculates the L2-norm of a vector', opts, function test( t
 	x = new Float64Array( [ 1.0e150, 1.0e50, 1.0e150, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e150, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.414213562373095e150, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.0e-155, 1.0e50, 1.0e-155, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e50, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.4142135623730952e50, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.4e-154, 1.5e-154, 1.4e-154, 0.0 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 2.4839480006885204e-154, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 2.4839484696748444e-154, 0 ), true, 'returns expected value' );
 
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.js b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.js
index d006f32794ea..7c6f1f6f3f17 100644
--- a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.js
+++ b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.js
@@ -23,40 +23,10 @@
 var tape = require( 'tape' );
 var sqrt = require( '@stdlib/math/base/special/sqrt' );
 var Float64Array = require( '@stdlib/array/float64' );
-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 dnrm2 = require( './../lib/ndarray.js' );
 
 
-// FUNCTIONS //
-
-/**
-* Tests for element-wise approximate equality.
-*
-* @private
-* @param {Object} t - test object
-* @param {Collection} actual - actual values
-* @param {Collection} expected - expected values
-* @param {number} rtol - relative tolerance
-*/
-function isApprox( t, actual, expected, rtol ) {
-	var delta;
-	var tol;
-	var i;
-
-	t.strictEqual( actual.length, expected.length, 'returns expected value' );
-	for ( i = 0; i < expected.length; i++ ) {
-		if ( actual[ i ] === expected[ i ] ) {
-			t.strictEqual( actual[ i ], expected[ i ], 'returns expected value' );
-		} else {
-			delta = abs( actual[ i ] - expected[ i ] );
-			tol = rtol * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. actual: '+actual[ i ]+'. expected: '+expected[ i ]+'. delta: '+delta+'. tol: '+tol+'.' );
-		}
-	}
-}
-
-
 // TESTS //
 
 tape( 'main export is a function', function test( t ) {
@@ -97,17 +67,17 @@ tape( 'the function calculates the L2-norm of a vector', function test( t ) {
 	x = new Float64Array( [ 1.0e150, 1.0e50, 1.0e150, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e150, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.414213562373095e150, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.0e-155, 1.0e50, 1.0e-155, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e50, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.4142135623730952e50, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.4e-154, 1.5e-154, 1.4e-154, 0.0 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 2.4839480006885204e-154, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 2.4839484696748444e-154, 0 ), true, 'returns expected value' );
 
 	t.end();
 });
diff --git a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.native.js b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.native.js
index bef281bbf0ce..9afdcdc6d30b 100644
--- a/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.native.js
+++ b/lib/node_modules/@stdlib/blas/base/dnrm2/test/test.ndarray.native.js
@@ -24,8 +24,7 @@ var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
 var sqrt = require( '@stdlib/math/base/special/sqrt' );
 var Float64Array = require( '@stdlib/array/float64' );
-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 tryRequire = require( '@stdlib/utils/try-require' );
 
 
@@ -37,35 +36,6 @@ var opts = {
 };
 
 
-// FUNCTIONS //
-
-/**
-* Tests for element-wise approximate equality.
-*
-* @private
-* @param {Object} t - test object
-* @param {Collection} actual - actual values
-* @param {Collection} expected - expected values
-* @param {number} rtol - relative tolerance
-*/
-function isApprox( t, actual, expected, rtol ) {
-	var delta;
-	var tol;
-	var i;
-
-	t.strictEqual( actual.length, expected.length, 'returns expected value' );
-	for ( i = 0; i < expected.length; i++ ) {
-		if ( actual[ i ] === expected[ i ] ) {
-			t.strictEqual( actual[ i ], expected[ i ], 'returns expected value' );
-		} else {
-			delta = abs( actual[ i ] - expected[ i ] );
-			tol = rtol * EPS * abs( expected[ i ] );
-			t.ok( delta <= tol, 'within tolerance. actual: '+actual[ i ]+'. expected: '+expected[ i ]+'. delta: '+delta+'. tol: '+tol+'.' );
-		}
-	}
-}
-
-
 // TESTS //
 
 tape( 'main export is a function', opts, function test( t ) {
@@ -106,17 +76,17 @@ tape( 'the function calculates the L2-norm of a vector', opts, function test( t
 	x = new Float64Array( [ 1.0e150, 1.0e50, 1.0e150, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e150, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.414213562373095e150, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.0e-155, 1.0e50, 1.0e-155, 1.0e50 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 1.4142135623730951e50, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 1.4142135623730952e50, 0 ), true, 'returns expected value' );
 
 	x = new Float64Array( [ 1.4e-154, 1.5e-154, 1.4e-154, 0.0 ] );
 
 	z = dnrm2( x.length, x, 1, 0 );
-	isApprox( t, z, 2.4839480006885204e-154, 1.0 );
+	t.strictEqual( isAlmostSameValue( z, 2.4839484696748444e-154, 0 ), true, 'returns expected value' );
 
 	t.end();
 });