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2026-07-13 12:47:05 +08:00

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/* ******************************************************************************
*
*
* 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.
*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
* 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
******************************************************************************/
//
// Created by raver119 on 24/09/18.
//
#include <array/NDArrayList.h>
#include <system/op_boilerplate.h>
#if NOT_EXCLUDED(OP_Where)
#include <ops/declarable/helpers/where.h>
namespace sd {
namespace ops {
namespace helpers {
template <typename T>
static void __where(NDArray &condition, NDArray &output, memory::Workspace *workspace) {
NDArrayList list(0, true);
sd::LongType cnt = 0;
for (sd::LongType e = 0; e < condition.lengthOf(); e++) {
sd::LongType coords[SD_MAX_RANK];
INDEX2COORDS(e, condition.rankOf(), condition.shapeOf(), coords);
sd::LongType offset;
COORDS2INDEX(condition.rankOf(), shape::stride(condition.shapeInfo()), coords, offset);
if (condition.e<bool>(offset)) {
std::vector<sd::LongType> arrShape = {1, condition.rankOf()};
auto array = NDArrayFactory::create_('c', arrShape, output.dataType(), output.getContext());
for (sd::LongType f = 0; f < condition.rankOf(); f++) {
array->p(f, (T)coords[f]);
}
list.write(cnt++, array);
}
}
auto s = list.stack();
output.assign(s);
delete s;
}
BUILD_SINGLE_TEMPLATE( void __where, (NDArray & condition, NDArray &output, memory::Workspace *workspace),
SD_COMMON_TYPES);
void _where(sd::LaunchContext *context, NDArray &condition, NDArray &output, memory::Workspace *workspace) {
condition.syncToHost();
BUILD_SINGLE_SELECTOR(output.dataType(), __where, (condition, output, workspace), SD_COMMON_TYPES);
output.syncToDevice();
}
} // namespace helpers
} // namespace ops
} // namespace sd
#endif