test: add test for negative zero

Planeshifter · Planeshifter · commit b256d64a727e · 2025-12-25T12:58:07.000-06:00
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---
diff --git a/lib/node_modules/@stdlib/stats/strided/midrange-by/test/test.ndarray.js b/lib/node_modules/@stdlib/stats/strided/midrange-by/test/test.ndarray.js
@@ -23,6 +23,7 @@
 var tape = require( 'tape' );
 var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var isPositiveZero = require( '@stdlib/math/base/assert/is-positive-zero' );
+var isNegativeZero = require( '@stdlib/math/base/assert/is-negative-zero' );
 var toAccessorArray = require( '@stdlib/array/base/to-accessor-array' );
 var midrangeBy = require( './../lib/ndarray.js' );
 
@@ -66,6 +67,10 @@ tape( 'the function calculates the mid-range of a strided array via a callback f
 	v = midrangeBy( x.length, x, 1, 0, accessor );
 	t.strictEqual( isPositiveZero( v ), true, 'returns expected value' );
 
+	x = [ -0.0, -0.0 ];
+	v = midrangeBy( x.length, x, 1, 0, accessor );
+	t.strictEqual( isNegativeZero( v ), true, 'returns expected value' );
+
 	x = [ NaN ];
 	v = midrangeBy( x.length, x, 1, 0, accessor );
 	t.strictEqual( isnan( v ), true, 'returns expected value' );
