code: def test_scal(self):
      x = self._make_random_vector()
      a = 1.1
      if self.dtype.char in "FD":
          a = a - 1j * 0.9
      ref = a * x
      if self.mode is not None:
          a = self.mode.array(a, dtype=self.dtype)
      cublas.scal(a, x)
      cupy.testing.assert_allclose(x, ref, rtol=self.tol, atol=self.tol)
  
imports: import numpy
  import pytest
  import cupy
  from cupy import cublas
  from cupy import testing
label_desc: Use image node_id 14 for calling the TestLevel1Functions obj's underlying member method code with example usage: obj.test_scal() without return types