test: migrate math/base/special/erf to ULP base testing

PR-URL: #11355
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: shubham220420

lib/node_modules/@stdlib/math/base/special/erf/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 NINF = require( '@stdlib/constants/float64/ninf' );
 var PINF = require( '@stdlib/constants/float64/pinf' );
-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 erf = require( './../lib' );
 
 
@@ -57,8 +56,6 @@ tape( 'main export is a function', function test( t ) {
 
 tape( 'the function evaluates the error function for `x` on the interval `[-5,-100]', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -67,21 +64,13 @@ tape( 'the function evaluates the error function for `x` on the interval `[-5,-1
 	x = veryLargeNegative.x;
 	for ( i = 0; i < x.length; i++ ) {
 		y = erf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+', expected: '+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]+'. Δ: '+delta+'. tol: '+tol );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function evaluates the error function for `x` on the interval `[5,100]`', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -90,21 +79,13 @@ tape( 'the function evaluates the error function for `x` on the interval `[5,100
 	x = veryLargePositive.x;
 	for ( i = 0; i < x.length; i++ ) {
 		y = erf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+', expected: '+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]+'. Δ: '+delta+'. tol: '+tol );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function evaluates the error function for `x` on the interval `[-2.5,-5]`', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -113,21 +94,13 @@ tape( 'the function evaluates the error function for `x` on the interval `[-2.5,
 	x = largeNegative.x;
 	for ( i = 0; i < x.length; i++ ) {
 		y = erf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+', expected: '+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]+'. Δ: '+delta+'. tol: '+tol );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function evaluates the error function for `x` on the interval `[2.5,5]`', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -136,21 +109,13 @@ tape( 'the function evaluates the error function for `x` on the interval `[2.5,5
 	x = largePositive.x;
 	for ( i = 0; i < x.length; i++ ) {
 		y = erf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+', expected: '+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]+'. Δ: '+delta+'. tol: '+tol );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function evaluates the error function for `x` on the interval `[-1,-3]`', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -159,21 +124,13 @@ tape( 'the function evaluates the error function for `x` on the interval `[-1,-3
 	x = mediumNegative.x;
 	for ( i = 0; i < x.length; i++ ) {
 		y = erf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+', expected: '+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]+'. Δ: '+delta+'. tol: '+tol );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });
 
 tape( 'the function evaluates the error function for `x` on the interval `[1,3]`', function test( t ) {
 	var expected;
-	var delta;
-	var tol;
 	var x;
 	var y;
 	var i;
@@ -182,13 +139,7 @@ tape( 'the function evaluates the error function for `x` on the interval `[1,3]`
 	x = mediumPositive.x;
 	for ( i = 0; i < x.length; i++ ) {
 		y = erf( x[i] );
-		if ( y === expected[i] ) {
-			t.strictEqual( y, expected[i], 'x: '+x[i]+', y: '+y+', expected: '+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]+'. Δ: '+delta+'. tol: '+tol );
-		}
+		t.strictEqual( isAlmostSameValue( y, expected[ i ], 1 ), true, 'returns expected value' );
 	}
 	t.end();
 });