def exp(input, name: nil)
      check_allowed_types(input, FLOATING_POINT_TYPES)
      _op(:exp, input, name: name)
    end
def exp(input, name: nil)
      check_allowed_types(input, FLOATING_POINT_TYPES)
      _op(:exp, input, name: name)
    end
Computes exponential of x element-wise.