test: migrate stats/incr/nanmmeanvar to ULP-based assertions

lib/node_modules/@stdlib/stats/incr/nanmmeanvar/test/test.js

@@ -21,9 +21,8 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var isAlmostSameValue = require( '@stdlib/assert/is-almost-same-value' );
 var randu = require( '@stdlib/random/base/randu' );
-var abs = require( '@stdlib/math/base/special/abs' );
-var EPS = require( '@stdlib/constants/float64/eps' );
 var incrnanmmeanvar = require( './../lib' );
 
 
@@ -201,9 +200,7 @@ tape( 'the accumulator function computes a moving arithmetic mean and unbiased s
 tape( 'if not provided an input value, the accumulator function returns the current accumulated values', function test( t ) {
 	var expected;
 	var actual;
-	var delta;
 	var data;
-	var tol;
 	var acc;
 	var i;
 
@@ -220,10 +217,7 @@ tape( 'if not provided an input value, the accumulator function returns the curr
 	actual = acc();
 
 	t.strictEqual( actual[ 0 ], expected[ 0 ], 'returns expected value' );
-
-	delta = abs( actual[ 1 ] - expected[ 1 ] );
-	tol = EPS * expected[ 1 ];
-	t.strictEqual( delta < tol, true, 'expected: '+expected[ 1 ]+'. actual: '+actual+'. tol: '+tol+'. delta: '+delta+'.' );
+	t.strictEqual( isAlmostSameValue( actual[ 1 ], expected[ 1 ], 0 ), true, 'returns expected value' );
 
 	t.end();
 });