wehub-resource-sync
93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
/* ******************************************************************************
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*
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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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* See the NOTICE file distributed with this work for additional
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* information regarding copyright ownership.
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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,
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"Reshape: lengths before and after reshape should match, but got %i vs %i", x->lengthOf(),
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z->lengthOf());
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auto* zShapeVec = z->getShapeAsVector();
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if (Environment::getInstance().isDebugAndVerbose()) sd_printv("Reshape: new shape", *zShapeVec);
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auto xReshaped = x->reshape(z->ordering(), *zShapeVec);
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delete zShapeVec;
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z->assign(xReshaped);
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delete xReshaped;
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return Status::OK;
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}
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DECLARE_TYPES(flatten_2d) {
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getOpDescriptor()->setAllowedInputTypes(0, ANY)->setAllowedInputTypes(1, {ALL_INTS})->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<LongType> 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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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",
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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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} // namespace ops
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} // namespace sd
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#endif
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