cavis/libnd4j/include/indexing/impl/NDIndex.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
******************************************************************************/
//
// @author raver119@gmail.com
//
#include <indexing/NDIndex.h>
namespace sd {
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bool NDIndex::isInterval() {
return false;
}
Nd4jLong NDIndex::stride() {
return _stride;
}
sd::NDIndexAll::NDIndexAll() : sd::NDIndex() {
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_indices.push_back(-1);
}
sd::NDIndexPoint::NDIndexPoint(Nd4jLong point) : sd::NDIndex() {
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this->_indices.push_back(point);
}
bool NDIndexAll::isInterval() {
return false;
}
bool NDIndexPoint::isInterval() {
return false;
}
bool NDIndexInterval::isInterval() {
return true;
}
sd::NDIndexInterval::NDIndexInterval(Nd4jLong start, Nd4jLong end, Nd4jLong stride) : sd::NDIndex() {
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this->_stride = stride;
for (int e = start; e < end; e+= stride)
this->_indices.push_back(e);
}
bool sd::NDIndex::isAll() {
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return _indices.size() == 1 && _indices.at(0) == -1;
}
bool sd::NDIndex::isPoint() {
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return _indices.size() == 1 && _indices.at(0) >= 0;
}
std::vector<Nd4jLong> &sd::NDIndex::getIndices() {
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return _indices;
}
sd::NDIndex *sd::NDIndex::all() {
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return new NDIndexAll();
}
sd::NDIndex *sd::NDIndex::point(Nd4jLong pt) {
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return new NDIndexPoint(pt);
}
sd::NDIndex *sd::NDIndex::interval(Nd4jLong start, Nd4jLong end, Nd4jLong stride) {
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return new NDIndexInterval(start, end, stride);
}
}