cavis/libnd4j/include/ops/declarable/generic/shape/flatten.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 <system/op_boilerplate.h>
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#if NOT_EXCLUDED(OP_)
#include <ops/declarable/CustomOperations.h>
#include<ops/declarable/helpers/flatten.h>
namespace sd {
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namespace ops {
CUSTOM_OP_IMPL(flatten, -1, 1, false, 0, 1) {
auto output = OUTPUT_VARIABLE(0);
auto zType = output->dataType();
auto xType = INPUT_VARIABLE(0)->dataType();
REQUIRE_TRUE(xType == zType, 0, "Flatten: output array must have same data type as input arrays");
std::vector<NDArray*> arrays(block.width());
for (int e = 0; e < block.width(); e++) {
auto input = INPUT_VARIABLE(e);
REQUIRE_TRUE(xType == input->dataType(), 0, "Flatten: all input arrays must have the same data type");
arrays[e] = input;
}
char order = (char) INT_ARG(0);
helpers::flatten(block.launchContext(), arrays, output, order);
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return Status::OK();
}
DECLARE_TYPES(flatten) {
getOpDescriptor()->setAllowedInputTypes({ALL_INTS, ALL_FLOATS, sd::DataType::BOOL});
getOpDescriptor()->setAllowedOutputTypes(0, {ALL_FLOATS, ALL_INTS, sd::DataType::BOOL});
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}
DECLARE_SHAPE_FN(flatten) {
Nd4jLong length = 0;
sd::DataType dtype = ArrayOptions::dataType(inputShape->at(0));
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for (int e = 0; e < inputShape->size(); e++) {
length += shape::length(inputShape->at(e));
REQUIRE_TRUE(dtype == ArrayOptions::dataType(inputShape->at(e)), 0, "Flatten: all input arrays must have the same datatype");
}
return SHAPELIST(ConstantShapeHelper::getInstance()->vectorShapeInfo(length, dtype));
}
}
}
#endif