code: def test_expi_linspace_float64(self, xp, scp, dtype):
      x = xp.linspace(-10, 100, 1000, dtype=dtype)
      return scp.special.expi(x)
  
file_path: cupy/tests/cupyx_tests/scipy_tests/special_tests/test_expi.py
imports: import cupyx.scipy.special
  from cupy import testing
  from cupy.testing import numpy_cupy_allclose
label_desc: Use image node_id 7 for calling the TestExpi obj's underlying member method code with example usage: obj.test_expi_linspace_float64(xp, scp, dtype) and returns: scp