74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
/***************************************************************************
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* Copyright (c) 2023 Ondsel, Inc. *
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* *
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* This file is part of OndselSolver. *
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* *
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* See LICENSE file for details about copyright. *
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***************************************************************************/
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#include <cassert>
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#include "GEFullMat.h"
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using namespace MbD;
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void GEFullMat::forwardEliminateWithPivot(size_t)
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{
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assert(false);
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}
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void GEFullMat::backSubstituteIntoDU()
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{
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answerX = std::make_shared<FullColumn<double>>(n);
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answerX->at(n - 1) = rightHandSideB->at(m - 1) / matrixA->at(m - 1)->at(n - 1);
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for (int i = (int)n - 2; i >= 0; i--) //Use int because of decrement
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{
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auto rowi = matrixA->at(i);
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double sum = answerX->at(n) * rowi->at(n);
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for (size_t j = i + 1; j < n - 1; j++)
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{
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sum += answerX->at(j) * rowi->at(j);
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}
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answerX->at(i) = (rightHandSideB->at(i) - sum) / rowi->at(i);
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}
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}
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void GEFullMat::postSolve()
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{
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assert(false);
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}
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void GEFullMat::preSolvewithsaveOriginal(FMatDsptr, FColDsptr, bool)
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{
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assert(false);
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}
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void GEFullMat::preSolvewithsaveOriginal(SpMatDsptr, FColDsptr, bool)
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{
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assert(false);
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}
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double GEFullMat::getmatrixArowimaxMagnitude(size_t i)
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{
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return matrixA->at(i)->maxMagnitude();
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}
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FColDsptr GEFullMat::basicSolvewithsaveOriginal(FMatDsptr fullMat, FColDsptr fullCol, bool saveOriginal)
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{
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this->preSolvewithsaveOriginal(fullMat, fullCol, saveOriginal);
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for (size_t p = 0; p < m; p++)
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{
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this->doPivoting(p);
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this->forwardEliminateWithPivot(p);
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}
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this->backSubstituteIntoDU();
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this->postSolve();
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return answerX;
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}
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FColDsptr GEFullMat::basicSolvewithsaveOriginal(SpMatDsptr, FColDsptr, bool)
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{
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assert(false);
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return FColDsptr();
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}
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