wehub-resource-sync
99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
/* ******************************************************************************
|
|
*
|
|
*
|
|
* 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
|
|
******************************************************************************/
|
|
|
|
//
|
|
// @author Yurii Shyrma (iuriish@yahoo.com)
|
|
//
|
|
#include <array/ResultSet.h>
|
|
#include <execution/Threads.h>
|
|
#include <ops/declarable/helpers/matrixSetDiag.h>
|
|
#if NOT_EXCLUDED(OP_matrix_set_diag)
|
|
namespace sd {
|
|
namespace ops {
|
|
namespace helpers {
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
template <typename T>
|
|
void matrixSetDiag_(NDArray& input, NDArray& diagonal, NDArray& output, const bool zeroPad) {
|
|
// input and output are the same array (x == z) when zeroPad = true
|
|
// xRank = zRank, xRank = yRank + 1
|
|
// xLen = zLen
|
|
|
|
const T* x = input.bufferAsT<T>();
|
|
const T* y = diagonal.bufferAsT<T>();
|
|
T* z = output.bufferAsT<T>();
|
|
|
|
// Cache all shape information upfront
|
|
const sd::LongType* xShapeInfo = input.shapeInfo();
|
|
const sd::LongType* yShapeInfo = diagonal.shapeInfo();
|
|
const sd::LongType* zShapeInfo = output.shapeInfo();
|
|
|
|
// Cache shape-related values
|
|
const int xRank = input.rankOf();
|
|
const auto xLen = input.lengthOf();
|
|
|
|
// Cache shape and stride pointers
|
|
const sd::LongType* xShape = shape::shapeOf(xShapeInfo);
|
|
const sd::LongType* xStride = shape::stride(xShapeInfo);
|
|
const sd::LongType* yStride = shape::stride(yShapeInfo);
|
|
const sd::LongType* zStride = shape::stride(zShapeInfo);
|
|
|
|
// Check if input and output have same offsets
|
|
const bool areSameOffsets = shape::haveSameShapeAndStrides(xShapeInfo, zShapeInfo);
|
|
|
|
auto func = PRAGMA_THREADS_FOR {
|
|
// Pre-allocate coords array outside the loop
|
|
sd::LongType coords[SD_MAX_RANK];
|
|
|
|
for (sd::LongType i = 0; i < xLen; ++i) {
|
|
// Use cached shape data for coordinate transforms
|
|
INDEX2COORDS(i, xRank, xShape, coords);
|
|
|
|
sd::LongType xOffset;
|
|
COORDS2INDEX(xRank, xStride, coords, xOffset);
|
|
|
|
sd::LongType zOffset;
|
|
if (areSameOffsets) {
|
|
zOffset = xOffset;
|
|
} else {
|
|
COORDS2INDEX(xRank, zStride, coords, zOffset);
|
|
}
|
|
|
|
// Check diagonal condition using cached rank
|
|
if (coords[xRank - 2] == coords[xRank - 1]) {
|
|
sd::LongType yOffset;
|
|
COORDS2INDEX(xRank - 1, yStride, coords, yOffset);
|
|
z[zOffset] = y[yOffset];
|
|
} else {
|
|
z[zOffset] = zeroPad ? static_cast<T>(0) : x[xOffset];
|
|
}
|
|
}
|
|
};
|
|
|
|
samediff::Threads::parallel_for(func, 0, xLen);
|
|
}
|
|
//////////////////////////////////////////////////////////////////////////
|
|
void matrixSetDiag(sd::LaunchContext* context, NDArray& input, NDArray& diagonal, NDArray& output,
|
|
const bool zeroPad) {
|
|
BUILD_SINGLE_SELECTOR(input.dataType(), matrixSetDiag_, (input, diagonal, output, zeroPad), SD_COMMON_TYPES);
|
|
}
|
|
|
|
} // namespace helpers
|
|
} // namespace ops
|
|
} // namespace sd
|
|
#endif |