cavis/libnd4j/include/ops/declarable/impl/DeclarableReductionOp.cpp

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/*******************************************************************************
* 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
******************************************************************************/
//
// Created by raver119 on 07.10.2017.
//
#include <ops/declarable/DeclarableReductionOp.h>
#include <ops/declarable/DeclarableOp.h>
#include <helpers/TAD.h>
#include <helpers/ShapeUtils.h>
#include <helpers/ConstantTadHelper.h>
namespace nd4j {
namespace ops {
DeclarableReductionOp::DeclarableReductionOp(int numInputs, int numOutputs, const char *opName, bool allowsInplace, int tArgs, int iArgs) : nd4j::ops::DeclarableOp(numInputs, numOutputs, opName, allowsInplace, tArgs, iArgs) {
//
}
DeclarableReductionOp::~DeclarableReductionOp() {
//
}
nd4j::ShapeList* DeclarableReductionOp::calculateOutputShape(nd4j::ShapeList* inputShape, nd4j::graph::Context& block) {
// int numDims = INT_ARG(0);
std::vector<int> dims;
if (inputShape->size() > 1) {
// the second argument is axis
auto axis = INPUT_VARIABLE(1);
for (int e = 0; e < axis->lengthOf(); e++)
dims.push_back(axis->e<int>(e));
}
else if (block.getIArguments()->size())
for (int e = 0; e < block.getIArguments()->size(); e++)
dims.push_back(INT_ARG(e));
else if (block.getAxis()->size()) {
dims = *block.getAxis(); //.push_back(axis->e<int>(e));
}
if (dims.size() > 1)
std::sort(dims.begin(), dims.end());
// special case - output is scalar
if (dims.size() == 0 || (dims.size() == 1 && dims.at(0) == MAX_INT)) {
auto newShape = ConstantShapeHelper::getInstance()->scalarShapeInfo(block.dataType());
return SHAPELIST(newShape);
}
auto newShape = ShapeUtils::evalReduceShapeInfo('c', dims, inputShape->at(0), false, false, block.getWorkspace());
return SHAPELIST(newShape);
}
}
}