code: def test_diff_values_float():
      assert not are_values_different(0.0, 0.0)
      assert not are_values_different(0.0, 0.0, 0.0)  # can take more
      assert not are_values_different(1.1, 1.1)
      assert are_values_different(0.0, 1.1)
      assert are_values_different(0.0, 0, 1.1)
      assert are_values_different(1.0, 2.0)
  
file_path: nibabel/nibabel/tests/test_diff.py
imports: from os.path import abspath, dirname
  from os.path import join
  import numpy
  from nibabel.cmdline.diff import are_values_different
label_desc: Use image node_id 2 for calling a global function with example usage: test_diff_values_float() without return types