Fix way to determine default_complex

Author: cbourjau

array_api_tests/dtype_helpers.py

@@ -322,15 +322,16 @@ def accumulation_result_dtype(x_dtype, dtype_kwarg):
     default_float = xp.asarray(float()).dtype
     if default_float not in real_float_dtypes:
         warn(f"inferred default float is {default_float!r}, which is not a float")
-    if api_version > "2021.12":
+
+    if not (hasattr(xp, "complex32") or hasattr(xp, "complex64")):
+        default_complex = None
+    else:
         default_complex = xp.asarray(complex()).dtype
         if default_complex not in complex_dtypes:
             warn(
                 f"inferred default complex is {default_complex!r}, "
                 "which is not a complex"
             )
-    else:
-        default_complex = None
 
 if dtype_nbits[default_int] == 32:
     default_uint = _name_to_dtype.get("uint32")