public void ARange()
{
var lhs = DoubleArray.ARange(0, 10, 1);
lhs.AsDoubleSpan.ToArray().Should().BeEquivalentTo(0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
lhs.Properties.Should().Be(1);
lhs.Count.Should().Be(10);
}