diff --git a/quaddtype/numpy_quaddtype/src/casts.cpp b/quaddtype/numpy_quaddtype/src/casts.cpp
index c43b89f0..e4da0ad9 100644
--- a/quaddtype/numpy_quaddtype/src/casts.cpp
+++ b/quaddtype/numpy_quaddtype/src/casts.cpp
@@ -502,6 +502,9 @@ template <>
 inline npy_byte
 from_quad<npy_byte>(quad_value x, QuadBackendType backend)
 {
+    // runtime warnings often comes from/to casting of NaN, inf
+    // casting is used by ops at several positions leading to warnings
+    // fix can be catching the cases and returning corresponding type value without casting
     if (backend == BACKEND_SLEEF) {
         return (npy_byte)Sleef_cast_to_int64q1(x.sleef_value);
     }
diff --git a/quaddtype/numpy_quaddtype/src/umath/comparison_ops.cpp b/quaddtype/numpy_quaddtype/src/umath/comparison_ops.cpp
index 8ff2e661..ec285b86 100644
--- a/quaddtype/numpy_quaddtype/src/umath/comparison_ops.cpp
+++ b/quaddtype/numpy_quaddtype/src/umath/comparison_ops.cpp
@@ -200,7 +200,7 @@ create_quad_comparison_ufunc(PyObject *numpy, const char *ufunc_name)
         return -1;
     }
 
-    PyObject *DTypes = PyTuple_Pack(3, &PyArrayDescr_Type, &PyArrayDescr_Type, &PyArray_BoolDType);
+    PyObject *DTypes = PyTuple_Pack(3, Py_None, Py_None, Py_None);
     if (DTypes == 0) {
         Py_DECREF(promoter_capsule);
         return -1;
diff --git a/quaddtype/tests/test_quaddtype.py b/quaddtype/tests/test_quaddtype.py
index d657d8df..27368e57 100644
--- a/quaddtype/tests/test_quaddtype.py
+++ b/quaddtype/tests/test_quaddtype.py
@@ -385,6 +385,67 @@ def test_array_minmax(op, a, b):
         assert np.signbit(float_res) == np.signbit(
             quad_res), f"Zero sign mismatch for {op}({a}, {b})"
 
+class TestComparisonReductionOps:
+    """Test suite for comparison reduction operations on QuadPrecision arrays."""
+    
+    @pytest.mark.parametrize("op", ["all", "any"])
+    @pytest.mark.parametrize("input_array", [
+        (["1.0", "2.0", "3.0"]),
+        (["1.0", "0.0", "3.0"]),
+        (["0.0", "0.0", "0.0"]),
+        # Including negative zero
+        (["-0.0", "0.0"]),
+        # Including NaN (should be treated as true)
+        (["nan", "1.0"]),
+        (["nan", "0.0"]),
+        (["nan", "nan"]),
+        # inf cases
+        (["inf", "1.0"]),
+        (["-inf", "0.0"]),
+        (["inf", "-inf"]),
+        # Mixed cases
+        (["1.0", "-0.0", "nan", "inf"]),
+        (["0.0", "-0.0", "nan", "-inf"]),
+    ])
+    def test_reduction_ops(self, op, input_array):
+        """Test all and any reduction operations."""
+        quad_array = np.array([QuadPrecision(x) for x in input_array])
+        float_array = np.array([float(x) for x in input_array])
+        op = getattr(np, op)
+        result = op(quad_array)
+        expected = op(float_array)
+        
+        assert result == expected, (
+            f"Reduction op '{op}' failed for input {input_array}: "
+            f"expected {expected}, got {result}"
+        )
+
+    @pytest.mark.parametrize("val_str", [
+        "0.0",
+        "-0.0",
+        "1.0",
+        "-1.0",
+        "nan",
+        "inf",
+        "-inf",
+    ])
+    def test_scalar_reduction_ops(self, val_str):
+        """Test reduction operations on scalar QuadPrecision values."""
+        quad_val = QuadPrecision(val_str)
+        float_val = np.float64(val_str)
+
+        result_all = quad_val.all()
+        expected_all_result = float_val.all()
+        assert result_all == expected_all_result, (
+            f"Scalar all failed for {val_str}: expected {expected_all_result}, got {result_all}"
+        )
+        
+        result_any = quad_val.any()
+        expected_any_result = float_val.any()
+        assert result_any == expected_any_result, (
+            f"Scalar any failed for {val_str}: expected {expected_any_result}, got {result_any}"
+        )
+
 
 # Logical operations tests
 @pytest.mark.parametrize("op", ["logical_and", "logical_or", "logical_xor"])