82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
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/*******************************************************************************
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* Copyright (c) 2020 Konduit, K.K.
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*
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* This program and the accompanying materials are made available under the
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* terms of the Apache License, Version 2.0 which is available at
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* https://www.apache.org/licenses/LICENSE-2.0.
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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******************************************************************************/
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//
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// Created by GS <sgazeos@gmail.com> at 01/14/2020
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//
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#include <op_boilerplate.h>
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#if NOT_EXCLUDED(OP_triangual_solve)
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#include <ops/declarable/CustomOperations.h>
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#include <ops/declarable/helpers/triangular_solve.h>
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namespace nd4j {
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namespace ops {
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CUSTOM_OP_IMPL(triangular_solve, 2, 1, false, 0, 0) {
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auto a = INPUT_VARIABLE(0);
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auto b = INPUT_VARIABLE(1);
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auto z = OUTPUT_VARIABLE(0);
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bool isLower = true;
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bool useAdjoint = false;
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if (block.numB() > 0) {
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if (block.numB() > 1) {
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isLower = B_ARG(0);
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useAdjoint = B_ARG(1);
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}
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else {
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isLower = B_ARG(0);
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}
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}
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REQUIRE_TRUE(a->rankOf() >=2, 0, "triangular_solve: The rank of input left tensor should not be less than 2, but %i is given", a->rankOf());
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REQUIRE_TRUE(b->rankOf() >=2, 0, "triangular_solve: The rank of input right tensor should not be less than 2, but %i is given", b->rankOf());
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REQUIRE_TRUE(a->sizeAt(-1) == a->sizeAt(-2), 0, "triangular_solve: The last two dimmensions should be equal, but %i and %i are given", a->sizeAt(-1), a->sizeAt(-2));
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REQUIRE_TRUE(a->sizeAt(-1) == b->sizeAt(-2), 0, "triangular_solve: The last dimmension of left part should be equal to prelast of right part, but %i and %i are given", a->sizeAt(-1), b->sizeAt(-2));
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auto input = a;
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if (useAdjoint) {
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auto adjointA = a->ulike();
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helpers::adjointMatrix(block.launchContext(), a, isLower, &adjointA);
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input = new NDArray(adjointA); //.detach();
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isLower = !isLower;
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};
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auto res = helpers::triangularSolveFunctor(block.launchContext(), input, b, isLower, useAdjoint, z);
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if (input != a)
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delete input;
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return Status::OK();
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}
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DECLARE_SHAPE_FN(triangular_solve) {
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auto in0 = inputShape->at(1);
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auto in1 = inputShape->at(1);
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auto luShape = ShapeBuilders::copyShapeInfoAndType(in1, in0, true, block.workspace());
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return SHAPELIST(CONSTANT(luShape));
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}
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DECLARE_TYPES(triangular_solve) {
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getOpDescriptor()
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->setAllowedInputTypes({ALL_FLOATS})
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->setAllowedOutputTypes({ALL_FLOATS})
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->setSameMode(false);
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}
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}
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}
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#endif
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