94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
/*******************************************************************************
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* Copyright (c) 2015-2018 Skymind, Inc.
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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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* 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 raver119@gmail.com
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//
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#include <algorithm>
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#include "../TadDescriptor.h"
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namespace sd {
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TadDescriptor::TadDescriptor(const TadDescriptor &other) {
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_originalShape = other._originalShape;
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_axis = other._axis;
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_unitiesInShape = other._unitiesInShape;
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}
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TadDescriptor::TadDescriptor(const Nd4jLong *originalShape, const int *dimensions, const int length, const bool keepUnitiesInShape) {
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ShapeDescriptor descriptor(originalShape);
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_axis.resize(length);
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for (int e = 0; e < length; e++)
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_axis[e] = dimensions[e];
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if (length > 1)
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std::sort(_axis.begin(), _axis.end());
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_originalShape = descriptor;
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_unitiesInShape = keepUnitiesInShape;
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}
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TadDescriptor::TadDescriptor(const ShapeDescriptor &descriptor, const std::vector<int> &dimensions, const bool keepUnitiesInShape) {
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_originalShape = descriptor;
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_axis = dimensions;
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_unitiesInShape = keepUnitiesInShape;
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if (_axis.size() > 1)
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std::sort(_axis.begin(), _axis.end());
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}
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bool TadDescriptor::operator==(const TadDescriptor &other) const {
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return std::tie(_originalShape, _axis, _unitiesInShape) == std::tie(other._originalShape, other._axis, other._unitiesInShape);
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}
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bool TadDescriptor::operator<(const TadDescriptor &other) const {
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return std::tie(_originalShape, _axis, _unitiesInShape) < std::tie(other._originalShape, other._axis, other._unitiesInShape);
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}
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std::vector<int>& TadDescriptor::axis() {
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return _axis;
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}
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ShapeDescriptor& TadDescriptor::originalShape(){
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return _originalShape;
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}
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ShapeDescriptor const& TadDescriptor::originalShapeConst() const{
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return _originalShape;
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}
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bool TadDescriptor::areUnitiesinShape() const {
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return _unitiesInShape;
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}
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}
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namespace std {
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size_t hash<sd::TadDescriptor>::operator()(const sd::TadDescriptor &k) const {
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// Compute individual hash values for first,
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// second and third and combine them using XOR
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// and bit shifting:
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auto res = std::hash<int>()((int)k.areUnitiesinShape());
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res ^= std::hash<sd::ShapeDescriptor>()(k.originalShapeConst()) + 0x9e3779b9 + (res << 6) + (res >> 2);
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auto axes = const_cast<sd::TadDescriptor&>(k).axis();
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for (auto a: axes) {
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res ^= std::hash<int>()(a) + 0x9e3779b9 + (res << 6) + (res >> 2);
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}
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return res;
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}
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} |