def acos(input, name: nil)
      check_allowed_types(input, FLOATING_POINT_TYPES)
      _op(:acos, input, name: name)
    end
def acos(input, name: nil)
      check_allowed_types(input, FLOATING_POINT_TYPES)
      _op(:acos, input, name: name)
    end
Computes acos of input element-wise