73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
#pragma once
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#include "Array.h"
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#include "FullColumn.h"
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namespace MbD {
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template<typename T>
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class DiagonalMatrix : public Array<T>
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{
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//
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public:
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DiagonalMatrix(int count) : Array<T>(count) {}
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DiagonalMatrix(std::initializer_list<T> list) : Array<T>{ list } {}
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void atiputDiagonalMatrix(int i, std::shared_ptr < DiagonalMatrix<T>> diagMat);
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std::shared_ptr<FullColumn<T>> timesFullColumn(std::shared_ptr<FullColumn<T>> fullCol);
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int nrow() {
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return (int) this->size();
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}
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int ncol() {
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return (int) this->size();
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}
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double sumOfSquares() override;
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int numberOfElements() override;
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void zeroSelf() override;
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};
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template<typename T>
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inline void DiagonalMatrix<T>::atiputDiagonalMatrix(int i, std::shared_ptr<DiagonalMatrix<T>> diagMat)
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{
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for (int ii = 0; ii < diagMat->size(); ii++)
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{
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this->at(i + ii) = diagMat->at(ii);
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}
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}
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template<typename T>
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inline std::shared_ptr<FullColumn<T>> DiagonalMatrix<T>::timesFullColumn(std::shared_ptr<FullColumn<T>> fullCol)
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{
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//"a*b = a(i,j)b(j) sum j."
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auto nrow = (int) this->size();
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auto answer = std::make_shared<FullColumn<T>>(nrow);
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for (int i = 0; i < nrow; i++)
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{
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answer->at(i) = this->at(i) * fullCol->at(i);
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}
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return answer;
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}
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template<>
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inline double DiagonalMatrix<double>::sumOfSquares()
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{
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double sum = 0.0;
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for (int i = 0; i < this->size(); i++)
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{
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double element = this->at(i);
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sum += element * element;
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}
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return sum;
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}
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template<typename T>
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inline int DiagonalMatrix<T>::numberOfElements()
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{
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auto n = (int) this->size();
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return n * n;
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}
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template<>
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inline void DiagonalMatrix<double>::zeroSelf()
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{
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for (int i = 0; i < this->size(); i++) {
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this->at(i) = 0.0;
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}
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}
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}
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