test: cover zero-beta branch in ndarray

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---

Author: DivitJain26

lib/node_modules/@stdlib/blas/base/cgemv/test/test.ndarray.js

@@ -694,6 +694,60 @@ tape( 'if `α` is `0`, the function scales the second input vector by `β` (colu
 	t.end();
 });
 
+tape( 'if `α` is `0` and `β` is `0`, the function zeros the second input vector (row-major)', function test( t ) {
+	var expected;
+	var alpha;
+	var data;
+	var beta;
+	var out;
+	var a;
+	var x;
+	var y;
+
+	data = ra;
+
+	a = new Complex64Array( data.A );
+	x = new Complex64Array( data.x );
+	y = new Complex64Array( data.y );
+
+	alpha = new Complex64( 0.0, 0.0 );
+	beta = new Complex64( 0.0, 0.0 );
+
+	expected = new Complex64Array( data.y.length );
+
+	out = cgemv( data.trans, data.M, data.N, alpha, a, data.strideA1, data.strideA2, data.offsetA, x, data.strideX, data.offsetX, beta, y, data.strideY, data.offsetY );
+	t.deepEqual( out, expected, true, 'returns expected value' );
+
+	t.end();
+});
+
+tape( 'if `α` is `0` and `β` is `0`, the function zeros the second input vector (column-major)', function test( t ) {
+	var expected;
+	var alpha;
+	var data;
+	var beta;
+	var out;
+	var a;
+	var x;
+	var y;
+
+	data = ca;
+
+	a = new Complex64Array( data.A );
+	x = new Complex64Array( data.x );
+	y = new Complex64Array( data.y );
+
+	alpha = new Complex64( 0.0, 0.0 );
+	beta = new Complex64( 0.0, 0.0 );
+
+	expected = new Complex64Array( data.y.length );
+
+	out = cgemv( data.trans, data.M, data.N, alpha, a, data.strideA1, data.strideA2, data.offsetA, x, data.strideX, data.offsetX, beta, y, data.strideY, data.offsetY );
+	t.deepEqual( out, expected, true, 'returns expected value' );
+
+	t.end();
+});
+
 tape( 'if `x` contains only zeros and `β` is not `1`, the function scales the second input vector by `β` (row-major)', function test( t ) {
 	var expected;
 	var alpha;