wehub-resource-sync
97 lines
3.4 KiB
C++
97 lines
3.4 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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// @author Yurii Shyrma (iuriish@yahoo.com), created on 01.11.2017.
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//
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#include <system/op_boilerplate.h>
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#if NOT_EXCLUDED(OP_stack)
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#include <ops/declarable/CustomOperations.h>
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#include <ops/declarable/helpers/stack.h>
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namespace sd {
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namespace ops {
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CUSTOM_OP_IMPL(stack, -1, 1, false, 0, 0) {
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auto input = INPUT_VARIABLE(0);
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auto output = OUTPUT_VARIABLE(0);
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int dim = block.getIArguments()->size() > 0 ? INT_ARG(0) : 0;
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if (dim < 0) dim += input->rankOf() + 1;
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// no-op in case of empty output array
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if (output->isEmpty()) return Status::OK;
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// input validation
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// check whether shapes of all input array are the same
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for (size_t i = 0; i < block.width() - 1; ++i)
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REQUIRE_TRUE(shape::equalsSoft((INPUT_VARIABLE(i))->shapeInfo(), (INPUT_VARIABLE(i + 1))->shapeInfo()), 0,
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"STACK op: the shapes of all input arrays must be the same !");
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REQUIRE_TRUE(
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dim <= input->rankOf(), 0,
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"STACK op: the input dimension parameter must be <= rank of input arrays shapes (rank=%i), but got %i instead !",
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input->shapeOf(), dim);
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std::vector<NDArray*> inArrs(block.width());
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for (size_t i = 0; i < block.width(); ++i) inArrs[i] = INPUT_VARIABLE(i);
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//empty arrays are a no op
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if(block.width() >= 1 && !inArrs[0]->isEmpty())
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helpers::stack(block.launchContext(), inArrs, *output, dim);
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return Status::OK;
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}
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DECLARE_SYN(pack, stack);
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DECLARE_SYN(Pack, stack);
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DECLARE_TYPES(stack) {
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getOpDescriptor()->setAllowedInputTypes(ANY)->setAllowedOutputTypes(ANY);
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}
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DECLARE_SHAPE_FN(stack) {
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// check whether input dimension is within rank range
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auto inShapeInfo = inputShape->at(0);
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int rank = shape::rank(inShapeInfo);
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int dim = block.getIArguments()->size() > 0 ? INT_ARG(0) : 0;
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if (dim < 0) dim += rank + 1;
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REQUIRE_TRUE(
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dim <= inShapeInfo[0], 0,
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"STACK op: the input dimension parameter must be <= rank of input arrays shapes (rank=%i), but got %i instead !",
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inShapeInfo[0], dim);
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// the rank of output ShapeInfo is larger by one compared to input ShapeInfo
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std::vector<LongType> outShape(inShapeInfo + 1, inShapeInfo + 1 + rank);
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// insert (int) block.width() at dim position of input shape to get output shape
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outShape.insert(outShape.begin() + LongType(dim), (LongType)block.width());
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auto ret = SHAPELIST(ConstantShapeHelper::getInstance().bufferForShapeInfo(ArrayOptions::dataType(inShapeInfo),
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shape::order(inShapeInfo),
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outShape)->primary());
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return ret;
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}
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} // namespace ops
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} // namespace sd
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#endif
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