code: def test_relaxed_c_contiguous_input(self, xp, dtype):
      x1 = testing.shaped_arange((2, 2, 3), xp, dtype)[:, None, :, :]
      x2 = testing.shaped_arange((2, 1, 3, 1), xp, dtype)
      return x1 @ x2
  
imports: import operator
  import unittest
  import numpy
  import pytest
  import cupy
  from cupy._core import _routines_linalg
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestMatmulStrides obj's underlying member method code with example usage: obj.test_relaxed_c_contiguous_input(xp, dtype) and returns: unknown