Add comment to the line changed in this PR

Author: oleksandr-pavlyk

dpctl/tensor/_copy_utils.py

@@ -672,6 +672,10 @@ def astype(
     f_contig = usm_ary.flags.f_contiguous
     needs_copy = copy or not ary_dtype == target_dtype
     if not needs_copy and (order != "K"):
+        # ensure that order="F" for C-contig input triggers copy,
+        # and order="C" for F-contig input triggers copy too.
+        # 1D arrays which are both C- and F- contig should not
+        # force copying for neither order="F", nor order="C", see gh-1926
         needs_copy = (
             c_contig and not f_contig and order not in ["A", "C"]
         ) or (not c_contig and f_contig and order not in ["A", "F"])