cavis/libnd4j/include/ops/declarable/generic/parity_ops/parallelStack.cpp

77 lines
2.3 KiB
C++

/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* 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.
*
* 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
******************************************************************************/
//
// @author Yurii Shyrma (iuriish@yahoo.com), created on 01.11.2017
//
#include <system/op_boilerplate.h>
#if NOT_EXCLUDED(OP_parallel_stack)
#include <ops/declarable/CustomOperations.h>
#include<ops/declarable/helpers/stack.h>
namespace sd {
namespace ops {
CUSTOM_OP_IMPL(parallel_stack, -1, 1, false, 0, 0) {
auto input = INPUT_VARIABLE(0);
auto output = OUTPUT_VARIABLE(0);
// check whether shapes of all input array are the same
for (int i = 0; i < (int) block.width() - 1; ++i)
REQUIRE_TRUE(shape::equalsSoft((INPUT_VARIABLE(i))->getShapeInfo(), (INPUT_VARIABLE(i+1))->getShapeInfo()), 0, "PARALLEL_STACK op: the shapes of all input arrays must be the same !");
std::vector<const NDArray*> inArrs(block.width());
for(int i = 0; i < block.width(); ++i)
inArrs[i] = INPUT_VARIABLE(i);
const int dim = 0;
helpers::stack(block.launchContext(), inArrs, output, dim);
return Status::OK();
}
DECLARE_TYPES(parallel_stack) {
getOpDescriptor()
->setAllowedInputTypes(sd::DataType::ANY)
->setAllowedOutputTypes({ALL_FLOATS});
}
DECLARE_SHAPE_FN(parallel_stack) {
auto inShapeInfo = inputShape->at(0);
int rank = inShapeInfo[0];
Nd4jLong* outShapeInfo = nullptr;
ALLOCATE(outShapeInfo, block.getWorkspace(), shape::shapeInfoLength(rank+1), Nd4jLong);
outShapeInfo[0] = rank + 1;
outShapeInfo[1] = block.width();
for(int i = 1; i <= rank; ++i)
outShapeInfo[i+1] = inShapeInfo[i];
ShapeUtils::updateStridesAndType(outShapeInfo, inShapeInfo, shape::order(inShapeInfo));
return SHAPELIST(CONSTANT(outShapeInfo));
}
}
}
#endif