setup do
  # create a byte array filled with 0's
  @a = MDArray.typed_arange("double", 90)
  # create double array
  @b = MDArray.double([2, 3, 4])
end
#-------------------------------------------------------------------------------------
#
#-------------------------------------------------------------------------------------
should "execute trigonometric functions" do
  sin = @a.sin
  cos = @a.cos
  id = sin**2 + cos**2
  assert_equal(1, id)
  sec = 1 / @a.cos
end