class_docstr: Mixin class for gemv tests 
class_docstr_tok: ["Mixin","class","for","gemv","tests"]
code: def test_x_stride_transpose(self):
      alpha, beta, a, x, y = self.get_data(x_stride=2)
      desired_y = (
          alpha * matrixmultiply(transpose(a), x[::2]) + beta * y
      )
      y = self.blas_func(alpha, a, x, beta, y, trans=1, incx=2)
      assert_array_almost_equal(desired_y, y)
  
imports: from numpy import float32, float64, complex64, complex128, arange, array, zeros, shape, transpose, newaxis, common_type, conjugate
  from scipy.linalg import _fblas
  from numpy.testing import assert_array_equal, assert_allclose, assert_array_almost_equal, assert_
  import pytest
label_desc: Use image node_id 7 for calling the BaseGemv obj's underlying member method code with example usage: obj.test_x_stride_transpose() without return types