92 lines
2.9 KiB
C++
92 lines
2.9 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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// Created by raver119 on 29/10/17.
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//
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#include <system/op_boilerplate.h>
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#if NOT_EXCLUDED(OP_flatten2d)
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#include <ops/declarable/CustomOperations.h>
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namespace sd {
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namespace ops {
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//////////////////////////////////////////////////////////////////////////
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// here iArgs is a vector with (optional) negative of order as first element:
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// ({-order, dim1, dim2, dim3, ...})
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CUSTOM_OP_IMPL(flatten_2d, 1, 1, false, 0, -2) {
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auto x = INPUT_VARIABLE(0);
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auto z = OUTPUT_VARIABLE(0);
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//Special case: empty.reshape(<other empty shape>) -> return empty
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if (x->isEmpty()) {
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REQUIRE_TRUE(z->isEmpty(), 0, "Reshape: when input is empty, output must also be empty");
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return Status::OK(); //No op
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}
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REQUIRE_TRUE(x->lengthOf() == z->lengthOf(), 0, "Reshape: lengths before and after reshape should match, but got %i vs %i", x->lengthOf(), z->lengthOf());
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if (Environment::getInstance().isDebugAndVerbose())
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nd4j_printv("Reshape: new shape", z->getShapeAsVector());
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z->assign(x->reshape(z->ordering(), z->getShapeAsVector()));
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return Status::OK();
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}
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DECLARE_TYPES(flatten_2d) {
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getOpDescriptor()
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->setAllowedInputTypes(0, sd::DataType::ANY)
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->setAllowedInputTypes(1, {ALL_INTS})
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->setSameMode(true);
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}
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DECLARE_SHAPE_FN(flatten_2d) {
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const auto x = INPUT_VARIABLE(0);
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const auto shape = x->shapeOf();
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auto axis = INT_ARG(0);
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if(axis < 0) {
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axis += x->rankOf();
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}
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std::vector<int> reshapeArgs;
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std::vector<Nd4jLong> shapeNew;
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auto firstDim = 1;
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auto lastDim = 1;
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for(int i = 0; i < axis; i++) {
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firstDim *= shape[i];
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}
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for(int i = axis; i < x->rankOf(); i++) {
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lastDim *= shape[i];
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}
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shapeNew.push_back(firstDim);
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shapeNew.push_back(lastDim);
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nd4j_printf("Shape %d %d\n",firstDim,lastDim);
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auto len = shape::prodLong(shapeNew.data(), shapeNew.size());
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REQUIRE_TRUE(x->lengthOf() == len, 0, "Reshape: lengths before and after reshape should match, but got %i vs %i", x->lengthOf(), len);
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return SHAPELIST(ConstantShapeHelper::getInstance().createShapeInfo(x->dataType(), x->ordering(), shapeNew));
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}
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}
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}
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#endif |