wehub-resource-sync
88 lines
3.2 KiB
C++
88 lines
3.2 KiB
C++
/* ******************************************************************************
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*
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* See the NOTICE file distributed with this work for additional
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* information regarding copyright ownership.
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// CPU implementation of assign helper
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//
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#include <ops/declarable/helpers/assign.h>
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#include <execution/Threads.h>
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#include <helpers/ShapeUtils.h>
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#include <system/op_boilerplate.h>
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namespace sd {
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namespace ops {
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namespace helpers {
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template <typename X, typename Z>
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static void assignImpl_(NDArray* source, NDArray* target) {
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auto xBuffer = source->bufferAsT<X>();
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auto zBuffer = target->bufferAsT<Z>();
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auto xShapeInfo = source->shapeInfo();
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auto zShapeInfo = target->shapeInfo();
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const int xRank = shape::rank(xShapeInfo);
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const int zRank = shape::rank(zShapeInfo);
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const sd::LongType* xShape = shape::shapeOf(xShapeInfo);
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const sd::LongType* zShape = shape::shapeOf(zShapeInfo);
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const sd::LongType* xStride = shape::stride(xShapeInfo);
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const sd::LongType* zStride = shape::stride(zShapeInfo);
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const sd::LongType len = target->lengthOf();
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auto func = PRAGMA_THREADS_FOR {
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for (auto i = start; i < stop; i++) {
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sd::LongType xCoords[SD_MAX_RANK], zCoords[SD_MAX_RANK];
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sd::LongType xOffset, zOffset;
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INDEX2COORDS(i, zRank, zShape, zCoords);
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INDEX2COORDS(i, xRank, xShape, xCoords);
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COORDS2INDEX(xRank, xStride, xCoords, xOffset);
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COORDS2INDEX(zRank, zStride, zCoords, zOffset);
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zBuffer[zOffset] = static_cast<Z>(xBuffer[xOffset]);
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}
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};
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samediff::Threads::parallel_for(func, 0, len);
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}
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void assign(sd::LaunchContext* context, sd::NDArray* target, sd::NDArray* source) {
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if (target->lengthOf() != source->lengthOf()) {
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std::string errorMsg = "assign helper: Source and target arrays must have the same length. ";
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errorMsg += "Source shape: " + ShapeUtils::shapeAsString(source) + ", ";
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errorMsg += "Target shape: " + ShapeUtils::shapeAsString(target) + ", ";
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errorMsg += "Source datatype: " + DataTypeUtils::asString(source->dataType()) + ", ";
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errorMsg += "Target datatype: " + DataTypeUtils::asString(target->dataType());
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THROW_EXCEPTION(errorMsg.c_str());
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}
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NDArray::prepareSpecialUse({target}, {source});
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auto xType = source->dataType();
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auto zType = target->dataType();
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BUILD_DOUBLE_SELECTOR(xType, zType, assignImpl_, (source, target), SD_COMMON_TYPES, SD_COMMON_TYPES);
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NDArray::registerSpecialUse({target}, {source});
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}
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} // namespace helpers
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} // namespace ops
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} // namespace sd
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