cavis/libnd4j/include/ops/declarable/generic/transforms/tri.cpp

61 lines
1.9 KiB
C++

/*******************************************************************************
* 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 Yurii Shyrma, created on 31.03.2018
//
#include <ops/declarable/CustomOperations.h>
namespace sd {
namespace ops {
//////////////////////////////////////////////////////////////////////////
CUSTOM_OP_IMPL(tri, -2, 1, false, 0, 1) {
auto output = OUTPUT_VARIABLE(0);
const int diag = block.numI() > 2 ? INT_ARG(2) : 0;
BUILD_SINGLE_SELECTOR(output->dataType(), output->fillAsTriangular, (1., diag + 1, 0, *output, 'l'), LIBND4J_TYPES); // fill with unities lower triangular block of matrix
BUILD_SINGLE_SELECTOR(output->dataType(), output->fillAsTriangular, (0., 0, diag, *output, 'u'), LIBND4J_TYPES); // fill with zeros upper triangular block of matrix
// output->setValueInDiagMatrix(1., diag, 'l');
// output->setValueInDiagMatrix(0., diag+1, 'u');
return Status::OK();
}
DECLARE_TYPES(tri) {
getOpDescriptor()
->setAllowedOutputTypes(0, {ALL_FLOATS, ALL_INTS});
}
DECLARE_SHAPE_FN(tri) {
const int rows = INT_ARG(0);
const int cols = block.numI() > 1 ? INT_ARG(1) : rows;
return SHAPELIST(ConstantShapeHelper::getInstance()->createShapeInfo(block.dataType(), 'c', {rows, cols}));
}
}
}