ENH: add less ufunc

.github/workflows/array_api.yml

@@ -30,7 +30,7 @@ jobs:
           cd /tmp
           git clone https://github.com/kokkos/pykokkos-base.git
           cd pykokkos-base
-          python setup.py install -- -DENABLE_LAYOUTS=ON -DENABLE_MEMORY_TRAITS=OFF
+          python setup.py install -- -DENABLE_LAYOUTS=ON -DENABLE_MEMORY_TRAITS=OFF -DENABLE_VIEW_RANKS=5
       - name: Install pykokkos
         run: |
           python -m pip install .
@@ -49,4 +49,4 @@ jobs:
           # for hypothesis-driven test case generation
           pytest $GITHUB_WORKSPACE/pre_compile_tools/pre_compile_ufuncs.py -s
           # only run a subset of the conformance tests to get started
-          pytest array_api_tests/meta/test_broadcasting.py array_api_tests/meta/test_equality_mapping.py array_api_tests/meta/test_signatures.py array_api_tests/meta/test_special_cases.py array_api_tests/test_constants.py array_api_tests/meta/test_utils.py array_api_tests/test_creation_functions.py::test_ones array_api_tests/test_creation_functions.py::test_ones_like array_api_tests/test_data_type_functions.py::test_result_type array_api_tests/test_operators_and_elementwise_functions.py::test_log10 array_api_tests/test_operators_and_elementwise_functions.py::test_sqrt array_api_tests/test_operators_and_elementwise_functions.py::test_isfinite array_api_tests/test_operators_and_elementwise_functions.py::test_log2 array_api_tests/test_operators_and_elementwise_functions.py::test_log1p array_api_tests/test_operators_and_elementwise_functions.py::test_isinf array_api_tests/test_operators_and_elementwise_functions.py::test_log array_api_tests/test_array_object.py::test_scalar_casting array_api_tests/test_operators_and_elementwise_functions.py::test_sign array_api_tests/test_operators_and_elementwise_functions.py::test_square array_api_tests/test_operators_and_elementwise_functions.py::test_cos array_api_tests/test_operators_and_elementwise_functions.py::test_round array_api_tests/test_operators_and_elementwise_functions.py::test_trunc array_api_tests/test_operators_and_elementwise_functions.py::test_ceil array_api_tests/test_operators_and_elementwise_functions.py::test_floor
+          pytest array_api_tests/meta/test_broadcasting.py array_api_tests/meta/test_equality_mapping.py array_api_tests/meta/test_signatures.py array_api_tests/meta/test_special_cases.py array_api_tests/test_constants.py array_api_tests/meta/test_utils.py array_api_tests/test_creation_functions.py::test_ones array_api_tests/test_creation_functions.py::test_ones_like array_api_tests/test_data_type_functions.py::test_result_type array_api_tests/test_operators_and_elementwise_functions.py::test_log10 array_api_tests/test_operators_and_elementwise_functions.py::test_sqrt array_api_tests/test_operators_and_elementwise_functions.py::test_isfinite array_api_tests/test_operators_and_elementwise_functions.py::test_log2 array_api_tests/test_operators_and_elementwise_functions.py::test_log1p array_api_tests/test_operators_and_elementwise_functions.py::test_isinf array_api_tests/test_operators_and_elementwise_functions.py::test_log array_api_tests/test_array_object.py::test_scalar_casting array_api_tests/test_operators_and_elementwise_functions.py::test_sign array_api_tests/test_operators_and_elementwise_functions.py::test_square array_api_tests/test_operators_and_elementwise_functions.py::test_cos array_api_tests/test_operators_and_elementwise_functions.py::test_round array_api_tests/test_operators_and_elementwise_functions.py::test_trunc array_api_tests/test_operators_and_elementwise_functions.py::test_ceil array_api_tests/test_operators_and_elementwise_functions.py::test_floor array_api_tests/test_operators_and_elementwise_functions.py::test_less

.github/workflows/main_ci.yml

@@ -30,7 +30,7 @@ jobs:
           cd /tmp
           git clone https://github.com/kokkos/pykokkos-base.git
           cd pykokkos-base
-          python setup.py install -- -DENABLE_LAYOUTS=ON -DENABLE_MEMORY_TRAITS=OFF
+          python setup.py install -- -DENABLE_LAYOUTS=ON -DENABLE_MEMORY_TRAITS=OFF -DENABLE_VIEW_RANKS=5
       - name: Install pykokkos
         run: |
           python -m pip install .

pykokkos/__init__.py

@@ -61,7 +61,8 @@
                                  round,
                                  trunc,
                                  ceil,
-                                 floor)
+                                 floor,
+                                 less)
 from pykokkos.lib.info import iinfo, finfo
 from pykokkos.lib.create import (zeros,
                                  ones,
@@ -70,6 +71,7 @@
 from pykokkos.lib.manipulate import reshape, ravel, expand_dims
 from pykokkos.lib.util import all, any, sum, find_max, searchsorted, col, linspace, logspace
 from pykokkos.lib.constants import e, pi, inf, nan
+from pykokkos.interface.views import astype
 
 __array_api_version__ = "2021.12"
 

pykokkos/interface/views.py

@@ -392,6 +392,22 @@ def __array__(self, dtype=None):
         return self.data
 
 
+    def __lt__(self, other):
+        # avoid circular import with scoped import
+        from pykokkos.lib.ufuncs import less
+        if isinstance(other, float):
+            new_other = pk.View((), dtype=pk.double)
+            new_other[:] = other
+        elif isinstance(other, int):
+            new_other = pk.View((), dtype=pk.int64)
+            new_other[:] = other
+        elif isinstance(other, pk.View):
+            new_other = other
+        else:
+            raise ValueError("unexpected types!")
+        return less(self, new_other)
+
+
     @staticmethod
     def _get_dtype_name(type_name: str) -> str:
         """
@@ -785,3 +801,9 @@ class ScratchView7D(ScratchView, Generic[T]):
 
 class ScratchView8D(ScratchView, Generic[T]):
     pass
+
+
+def astype(view, dtype):
+    new_view = pk.View([*view.shape], dtype=dtype)
+    new_view[:] = view
+    return new_view