chore: import upstream snapshot with attribution

2026-07-13 12:47:05 +08:00
commit 4f3b7da785
7394 changed files with 2005594 additions and 0 deletions
@@ -0,0 +1,87 @@
+/* ******************************************************************************
+ *
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Apache License, Version 2.0 which is available at
+ * https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  See the NOTICE file distributed with this work for additional
+ *  information regarding copyright ownership.
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ ******************************************************************************/
+
+//
+// CPU implementation of assign helper
+//
+
+#include <ops/declarable/helpers/assign.h>
+#include <execution/Threads.h>
+#include <helpers/ShapeUtils.h>
+#include <system/op_boilerplate.h>
+
+namespace sd {
+namespace ops {
+namespace helpers {
+
+template <typename X, typename Z>
+static void assignImpl_(NDArray* source, NDArray* target) {
+    auto xBuffer = source->bufferAsT<X>();
+    auto zBuffer = target->bufferAsT<Z>();
+
+    auto xShapeInfo = source->shapeInfo();
+    auto zShapeInfo = target->shapeInfo();
+
+    const int xRank = shape::rank(xShapeInfo);
+    const int zRank = shape::rank(zShapeInfo);
+    const sd::LongType* xShape = shape::shapeOf(xShapeInfo);
+    const sd::LongType* zShape = shape::shapeOf(zShapeInfo);
+    const sd::LongType* xStride = shape::stride(xShapeInfo);
+    const sd::LongType* zStride = shape::stride(zShapeInfo);
+    const sd::LongType len = target->lengthOf();
+
+    auto func = PRAGMA_THREADS_FOR {
+        for (auto i = start; i < stop; i++) {
+            sd::LongType xCoords[SD_MAX_RANK], zCoords[SD_MAX_RANK];
+            sd::LongType xOffset, zOffset;
+
+            INDEX2COORDS(i, zRank, zShape, zCoords);
+            INDEX2COORDS(i, xRank, xShape, xCoords);
+            COORDS2INDEX(xRank, xStride, xCoords, xOffset);
+            COORDS2INDEX(zRank, zStride, zCoords, zOffset);
+
+            zBuffer[zOffset] = static_cast<Z>(xBuffer[xOffset]);
+        }
+    };
+
+    samediff::Threads::parallel_for(func, 0, len);
+}
+
+void assign(sd::LaunchContext* context, sd::NDArray* target, sd::NDArray* source) {
+    if (target->lengthOf() != source->lengthOf()) {
+        std::string errorMsg = "assign helper: Source and target arrays must have the same length. ";
+        errorMsg += "Source shape: " + ShapeUtils::shapeAsString(source) + ", ";
+        errorMsg += "Target shape: " + ShapeUtils::shapeAsString(target) + ", ";
+        errorMsg += "Source datatype: " + DataTypeUtils::asString(source->dataType()) + ", ";
+        errorMsg += "Target datatype: " + DataTypeUtils::asString(target->dataType());
+        THROW_EXCEPTION(errorMsg.c_str());
+    }
+
+    NDArray::prepareSpecialUse({target}, {source});
+
+    auto xType = source->dataType();
+    auto zType = target->dataType();
+
+    BUILD_DOUBLE_SELECTOR(xType, zType, assignImpl_, (source, target), SD_COMMON_TYPES, SD_COMMON_TYPES);
+
+    NDArray::registerSpecialUse({target}, {source});
+}
+
+}  // namespace helpers
+}  // namespace ops
+}  // namespace sd