Adds tests for cbrt, copysign, and exp2

Author: ndgrigorian

dpctl/tests/elementwise/test_cbrt.py

@@ -0,0 +1,182 @@
+#                       Data Parallel Control (dpctl)
+#
+#  Copyright 2020-2023 Intel Corporation
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import itertools
+import warnings
+
+import numpy as np
+import pytest
+from numpy.testing import assert_allclose, assert_equal
+
+import dpctl.tensor as dpt
+from dpctl.tests.helper import get_queue_or_skip, skip_if_dtype_not_supported
+
+from .utils import (
+    _all_dtypes,
+    _complex_fp_dtypes,
+    _map_to_device_dtype,
+    _real_fp_dtypes,
+    _usm_types,
+)
+
+
+@pytest.mark.parametrize("dtype", _all_dtypes)
+def test_cbrt_out_type(dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dtype, q)
+
+    X = dpt.asarray(0, dtype=dtype, sycl_queue=q)
+    expected_dtype = np.cbrt(np.array(0, dtype=dtype)).dtype
+    expected_dtype = _map_to_device_dtype(expected_dtype, q.sycl_device)
+    assert dpt.cbrt(X).dtype == expected_dtype
+
+
+@pytest.mark.parametrize("dtype", ["f2", "f4", "f8", "c8", "c16"])
+def test_cbrt_output_contig(dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dtype, q)
+
+    n_seq = 1027
+
+    X = dpt.linspace(0, 13, num=n_seq, dtype=dtype, sycl_queue=q)
+    Xnp = dpt.asnumpy(X)
+
+    Y = dpt.cbrt(X)
+    tol = 8 * dpt.finfo(Y.dtype).resolution
+
+    assert_allclose(dpt.asnumpy(Y), np.cbrt(Xnp), atol=tol, rtol=tol)
+
+
+@pytest.mark.parametrize("dtype", ["f2", "f4", "f8", "c8", "c16"])
+def test_cbrt_output_strided(dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dtype, q)
+
+    n_seq = 2054
+
+    X = dpt.linspace(0, 13, num=n_seq, dtype=dtype, sycl_queue=q)[::-2]
+    Xnp = dpt.asnumpy(X)
+
+    Y = dpt.cbrt(X)
+    tol = 8 * dpt.finfo(Y.dtype).resolution
+
+    assert_allclose(dpt.asnumpy(Y), np.cbrt(Xnp), atol=tol, rtol=tol)
+
+
+@pytest.mark.parametrize("usm_type", _usm_types)
+def test_cbrt_usm_type(usm_type):
+    q = get_queue_or_skip()
+
+    arg_dt = np.dtype("f4")
+    input_shape = (10, 10, 10, 10)
+    X = dpt.empty(input_shape, dtype=arg_dt, usm_type=usm_type, sycl_queue=q)
+    X[..., 0::2] = 16.0
+    X[..., 1::2] = 23.0
+
+    Y = dpt.cbrt(X)
+    assert Y.usm_type == X.usm_type
+    assert Y.sycl_queue == X.sycl_queue
+    assert Y.flags.c_contiguous
+
+    expected_Y = np.empty(input_shape, dtype=arg_dt)
+    expected_Y[..., 0::2] = np.cbrt(np.float32(16.0))
+    expected_Y[..., 1::2] = np.cbrt(np.float32(23.0))
+    tol = 8 * dpt.finfo(Y.dtype).resolution
+
+    assert_allclose(dpt.asnumpy(Y), expected_Y, atol=tol, rtol=tol)
+
+
+@pytest.mark.parametrize("dtype", _all_dtypes)
+def test_cbrt_order(dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dtype, q)
+
+    arg_dt = np.dtype(dtype)
+    input_shape = (10, 10, 10, 10)
+    X = dpt.empty(input_shape, dtype=arg_dt, sycl_queue=q)
+    X[..., 0::2] = 16.0
+    X[..., 1::2] = 23.0
+
+    for ord in ["C", "F", "A", "K"]:
+        for perms in itertools.permutations(range(4)):
+            U = dpt.permute_dims(X[:, ::-1, ::-1, :], perms)
+            Y = dpt.cbrt(U, order=ord)
+            expected_Y = np.cbrt(dpt.asnumpy(U))
+            tol = 8 * max(
+                dpt.finfo(Y.dtype).resolution,
+                np.finfo(expected_Y.dtype).resolution,
+            )
+            assert_allclose(dpt.asnumpy(Y), expected_Y, atol=tol, rtol=tol)
+
+
+@pytest.mark.usefixtures("suppress_invalid_numpy_warnings")
+def test_cbrt_special_cases():
+    q = get_queue_or_skip()
+
+    X = dpt.asarray(
+        [dpt.nan, -1.0, 0.0, -0.0, dpt.inf, -dpt.inf], dtype="f4", sycl_queue=q
+    )
+    Xnp = dpt.asnumpy(X)
+
+    assert_equal(dpt.asnumpy(dpt.cbrt(X)), np.cbrt(Xnp))
+
+
+@pytest.mark.parametrize("dtype", _real_fp_dtypes)
+def test_cbrt_real_fp_special_values(dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dtype, q)
+
+    nans_ = [dpt.nan, -dpt.nan]
+    infs_ = [dpt.inf, -dpt.inf]
+    finites_ = [-1.0, -0.0, 0.0, 1.0]
+    inps_ = nans_ + infs_ + finites_
+
+    x = dpt.asarray(inps_, dtype=dtype)
+    r = dpt.cbrt(x)
+
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore")
+        expected_np = np.cbrt(np.asarray(inps_, dtype=dtype))
+
+    expected = dpt.asarray(expected_np, dtype=dtype)
+    tol = dpt.finfo(r.dtype).resolution
+
+    assert dpt.allclose(r, expected, atol=tol, rtol=tol, equal_nan=True)
+
+
+@pytest.mark.broken_complex
+@pytest.mark.parametrize("dtype", _complex_fp_dtypes)
+def test_cbrt_complex_fp_special_values(dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dtype, q)
+
+    nans_ = [dpt.nan, -dpt.nan]
+    infs_ = [dpt.inf, -dpt.inf]
+    finites_ = [-1.0, -0.0, 0.0, 1.0]
+    inps_ = nans_ + infs_ + finites_
+    c_ = [complex(*v) for v in itertools.product(inps_, repeat=2)]
+
+    z = dpt.asarray(c_, dtype=dtype)
+    r = dpt.cbrt(z)
+
+    with warnings.catch_warnings():
+        warnings.simplefilter("ignore")
+        expected_np = np.cbrt(np.asarray(c_, dtype=dtype))
+
+    expected = dpt.asarray(expected_np, dtype=dtype)
+    tol = dpt.finfo(r.dtype).resolution
+
+    assert dpt.allclose(r, expected, atol=tol, rtol=tol, equal_nan=True)

dpctl/tests/elementwise/test_copysign.py

@@ -0,0 +1,111 @@
+#                       Data Parallel Control (dpctl)
+#
+#  Copyright 2020-2023 Intel Corporation
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+
+import ctypes
+
+import numpy as np
+import pytest
+
+import dpctl.tensor as dpt
+from dpctl.tests.helper import get_queue_or_skip, skip_if_dtype_not_supported
+
+from .utils import _compare_dtypes, _real_fp_dtypes
+
+
+@pytest.mark.parametrize("op1_dtype", _real_fp_dtypes)
+@pytest.mark.parametrize("op2_dtype", _real_fp_dtypes)
+def test_copysign_dtype_matrix(op1_dtype, op2_dtype):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(op1_dtype, q)
+    skip_if_dtype_not_supported(op2_dtype, q)
+
+    sz = 127
+    ar1 = dpt.ones(sz, dtype=op1_dtype)
+    ar2 = dpt.ones_like(ar1, dtype=op2_dtype)
+
+    r = dpt.copysign(ar1, ar2)
+    assert isinstance(r, dpt.usm_ndarray)
+    expected = np.copysign(
+        np.ones(1, dtype=op1_dtype), np.ones(1, dtype=op2_dtype)
+    )
+    assert _compare_dtypes(r.dtype, expected.dtype, sycl_queue=q)
+    assert r.shape == ar1.shape
+    assert (dpt.asnumpy(r) == expected.astype(r.dtype)).all()
+    assert r.sycl_queue == ar1.sycl_queue
+
+    ar3 = dpt.ones(sz, dtype=op1_dtype)
+    ar4 = dpt.ones(2 * sz, dtype=op2_dtype)
+
+    r = dpt.copysign(ar3[::-1], ar4[::2])
+    assert isinstance(r, dpt.usm_ndarray)
+    expected = np.copysign(
+        np.ones(1, dtype=op1_dtype), np.ones(1, dtype=op2_dtype)
+    )
+    assert _compare_dtypes(r.dtype, expected.dtype, sycl_queue=q)
+    assert r.shape == ar3.shape
+    assert (dpt.asnumpy(r) == expected.astype(r.dtype)).all()
+
+
+@pytest.mark.parametrize("arr_dt", _real_fp_dtypes)
+def test_copysign_python_scalar(arr_dt):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(arr_dt, q)
+
+    X = dpt.ones((10, 10), dtype=arr_dt, sycl_queue=q)
+    py_ones = (
+        bool(1),
+        int(1),
+        float(1),
+        np.float32(1),
+        ctypes.c_int(1),
+    )
+    for sc in py_ones:
+        R = dpt.copysign(X, sc)
+        assert isinstance(R, dpt.usm_ndarray)
+        R = dpt.copysign(sc, X)
+        assert isinstance(R, dpt.usm_ndarray)
+
+
+@pytest.mark.parametrize("dt", _real_fp_dtypes)
+def test_copysign(dt):
+    q = get_queue_or_skip()
+    skip_if_dtype_not_supported(dt, q)
+
+    x = dpt.arange(100, dtype=dt, sycl_queue=q)
+    x[1::2] *= -1
+    y = dpt.ones(100, dtype=dt, sycl_queue=q)
+    y[::2] *= -1
+    res = dpt.copysign(x, y)
+    expected = dpt.negative(x)
+    tol = dpt.finfo(dt).resolution
+    assert dpt.allclose(res, expected, atol=tol, rtol=tol)
+
+
+def test_copysign_special_values():
+    get_queue_or_skip()
+
+    x1 = dpt.asarray([1.0, 0.0, dpt.nan, dpt.nan], dtype="f4")
+    y1 = dpt.asarray([-1.0, -0.0, -dpt.nan, -1], dtype="f4")
+    res = dpt.copysign(x1, y1)
+    assert dpt.all(dpt.signbit(res))
+    x2 = dpt.asarray([-1.0, -0.0, -dpt.nan, -dpt.nan], dtype="f4")
+    res = dpt.copysign(x2, y1)
+    assert dpt.all(dpt.signbit(res))
+    y2 = dpt.asarray([0.0, 1.0, dpt.nan, 1.0], dtype="f4")
+    res = dpt.copysign(x2, y2)
+    assert not dpt.any(dpt.signbit(res))
+    res = dpt.copysign(x1, y2)
+    assert not dpt.any(dpt.signbit(res))