110 lines
4.2 KiB
C++
110 lines
4.2 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 <op_boilerplate.h>
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#if NOT_EXCLUDED(OP_roll)
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#include <ops/declarable/headers/parity_ops.h>
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#include <ops/declarable/helpers/roll.h>
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#include <ops/declarable/helpers/axis.h>
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namespace nd4j {
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namespace ops {
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CONFIGURABLE_OP_IMPL(roll, 1, 1, true, 0, 0) {
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auto output = OUTPUT_VARIABLE(0);
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auto input = INPUT_VARIABLE(0);
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int inputLen = input->lengthOf();
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bool shiftIsLinear = block.width() == 1;
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std::vector<int> axes;
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std::vector<int> shifts;
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if (block.width() > 1) {
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REQUIRE_TRUE(block.width() == 3, 0, "roll: 3 arguments required for roll - input, shifts and axes. But %i given.", block.width());
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auto axesI = INPUT_VARIABLE(2);
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auto shiftsI = INPUT_VARIABLE(1);
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REQUIRE_TRUE(axesI->rankOf() == shiftsI->rankOf(), 0, "roll: shifts and axes should be the same rank, but %i and %i given.", (int)shiftsI->rankOf(), (int)axesI->rankOf());
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REQUIRE_TRUE(axesI->lengthOf() == shiftsI->lengthOf(), 0, "roll: shifts and axes should be the same length, but %i and %i given.", (int)shiftsI->lengthOf(), (int)axesI->lengthOf());
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helpers::adjustAxis(axesI->lengthOf(), axesI, axes );
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shifts.resize(shiftsI->lengthOf());
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for (Nd4jLong i = 0; i < shiftsI->lengthOf(); i++) {
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auto shift = shiftsI->e<int>(i);
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if (shift < 0) {
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shift -= input->sizeAt(i) * (shift / inputLen - 1);
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}
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else {
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shift %= input->sizeAt(i);
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}
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shifts[i] = shift;
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}
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}
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else {
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int shift = INT_ARG(0);
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if (shift < 0) {
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// convert shift to positive value between 1 and inputLen - 1
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shift -= inputLen * (shift / inputLen - 1);
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}
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else
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// cut shift to value between 1 and inputLen - 1
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shift %= inputLen;
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axes.resize(block.getIArguments()->size() - 1);
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if (axes.size())
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shifts.resize(axes.size());//emplace_back(shift);
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else
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shifts.push_back(shift);
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for (auto& s: shifts)
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s = shift;
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for (unsigned e = 0; e < axes.size(); ++e) {
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int axis = INT_ARG(e + 1);
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REQUIRE_TRUE(axis < input->rankOf() && axis >= -input->rankOf(), 0, "roll: axe value should be between -%i and %i, but %i was given.",
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input->rankOf(), input->rankOf() - 1, axis);
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axes[e] = (axis < 0? (input->rankOf() + axis) : axis);
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}
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}
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if (block.isInplace()) output = input;
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shiftIsLinear = axes.size() == 0;
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if (shiftIsLinear) {
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helpers::rollFunctorLinear(block.launchContext(), input, output, shifts[0], block.isInplace());
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}
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else {
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helpers::rollFunctorFull(block.launchContext(), input, output, shifts, axes, block.isInplace());
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}
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return Status::OK();
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}
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DECLARE_TYPES(roll) {
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getOpDescriptor()
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->setAllowedInputTypes(0,nd4j::DataType::ANY)
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->setAllowedInputTypes(1,nd4j::DataType::INT32) // TODO: all ints in future
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->setAllowedInputTypes(2,nd4j::DataType::INT32)
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->setAllowedOutputTypes(nd4j::DataType::ANY)
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->setSameMode(true);
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}
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}
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}
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#endif |