Support for NumPy<2 (at least 1.26 series)

Author: FrancescAlted

src/blosc2/lazyexpr.py

@@ -113,7 +113,7 @@
     "max",
     "any",
     "all",
-    "pow",
+    "pow" if np.__version__.startswith("2.") else "power",
     "where",
 ]
 functions += constructors

tests/ndarray/test_lazyexpr.py

@@ -1144,6 +1144,10 @@ def test_get_expr_operands(expression, expected_operands):
     assert blosc2.get_expr_operands(expression) == set(expected_operands)
 
 
+@pytest.mark.skipif(
+    np.__version__.startswith("1."),
+    reason="NumPy < 2.0 has different casting rules"
+)
 @pytest.mark.parametrize(
     "scalar",
     [

tests/ndarray/test_lazyexpr_fields.py

@@ -22,7 +22,10 @@
         pytest.param((np.float64, np.float64), marks=pytest.mark.heavy),
         (np.int32, np.float32),
         (np.int32, np.uint32),
-        (np.int8, np.int16),
+        pytest.param((np.int8, np.int16), marks=pytest.mark.skipif(
+            np.__version__.startswith("1."),
+            reason="NumPy < 2.0 has different casting rules"
+        )),
         # The next dtypes work, but running everything takes too much time
         pytest.param((np.int32, np.float64), marks=pytest.mark.heavy),
         pytest.param((np.int8, np.float64), marks=pytest.mark.heavy),