cavis/libnd4j/include/ops/declarable/generic/parity_ops/lin_space.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 sgazeos@gmail.com
//
#include <system/op_boilerplate.h>
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#if NOT_EXCLUDED(OP_lin_space)
#include <ops/declarable/CustomOperations.h>
namespace sd {
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namespace ops {
CUSTOM_OP_IMPL(lin_space, 3, 1, false, 0, 0) {
auto output = OUTPUT_VARIABLE(0);
auto start = INPUT_VARIABLE(0);
auto finish = INPUT_VARIABLE(1);
auto numOfElements = INPUT_VARIABLE(2);
if (numOfElements->e<Nd4jLong>(0) == 1) {
output->assign(start);
return Status::OK();
}
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output->linspace(start->e<double>(0), (finish->e<double>(0) - start->e<double>(0)) / (numOfElements->e<Nd4jLong>(0) - 1.));
return Status::OK();
}
DECLARE_SHAPE_FN(lin_space) {
auto dataType = ArrayOptions::dataType(inputShape->at(0));
Nd4jLong steps = INPUT_VARIABLE(2)->e<Nd4jLong>(0);
return SHAPELIST(ConstantShapeHelper::getInstance()->vectorShapeInfo(steps, dataType));
}
DECLARE_TYPES(lin_space) {
getOpDescriptor()
->setAllowedInputTypes(0, {ALL_FLOATS, ALL_INTS})
->setAllowedInputTypes(1, {ALL_FLOATS, ALL_INTS})
->setAllowedInputTypes(2, {ALL_INTS})
->setAllowedOutputTypes({ALL_FLOATS, ALL_INTS});
}
}
}
#endif