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/* ************************************************************************
* Copyright 2013 Advanced Micro Devices, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://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.
* ************************************************************************/
#ifndef PROBLEM_ITERATOR_H_
#define PROBLEM_ITERATOR_H_
#include <kerngen.h>
#include "clblas-internal.h"
#include "blas_funcs.h"
// Problem iterator to scatter solving, for passing over matrix A
typedef struct ProblemIterator {
MatrixRole mrole;
size_t pos;
size_t prevPos;
size_t size;
size_t globPitch;
BlasFunctionID funcID;
clblasUplo uplo;
clblasSide side;
DataType dtype;
size_t maxPanels;
size_t maxBlocks;
size_t bpitch;
size_t bheight;
} ProblemIterator;
/*
* @maxBlocks: maximal number of blocks to iterate with;
* There is as little as 1 iteration if it is
* set to 0.
*/
void VISIBILITY_HIDDEN
initProblemIterator(
ProblemIterator *iter,
BlasFunctionID funcID,
MatrixRole mrole,
CLBlasKargs *kargs,
size_t maxPanels,
size_t maxBlocks,
SubproblemDim *topDim);
void VISIBILITY_HIDDEN
iteratorReset(ProblemIterator *iter);
bool VISIBILITY_HIDDEN
isIterBackward(ProblemIterator *iter);
/*
* Iterate in some dimension based on maximal blocks info;
* Iteration for the 'SDIM_BWIDTH' component is prohibited.
* Returns 1 when achieve the end position
*/
int VISIBILITY_HIDDEN
iterateProblem(ProblemIterator *iter);
size_t VISIBILITY_HIDDEN
iterLastOffset(ProblemIterator *iter);
#endif /* PROBLEM_ITERATOR_H_ */
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