typeMatrix

概要

  std::array<type> の行列版．column-major．任意型の固定長行列型を生成する．

Table 1. namespace sstd{ template <typename T> class mat; }

プロトタイプ宣言	動作説明
template <typename T> void copy (class sstd::mat<T>& lhs, class sstd::mat<T>& rhs);	copy rhs to lhs
template <typename T> void move (class sstd::mat<T>& lhs, class sstd::mat<T>& rhs);	move rhs to lhs
template <typename T> void swap(class sstd::mat<T>& lhs, class sstd::mat<T>& rhs);	sawp rhs and lhs
template <typename T> void zeros(class sstd::mat<T>& Mat);
template <typename T> class sstd::mat<T> Tr(class sstd::mat<T>& rhs);	transpose rhs
template <typename T> void Tr_myself(class sstd::mat<T>& rhs);	transpose rhs(myself)
template <typename T> class sstd::mat<T>* copyRect(class sstd::mat<T>*& pMat, uint rowStart, uint rowEnd, uint colStart, uint colEnd);
void print(class sstd::mat <char>& Mat);
void print(class sstd::mat <uchar>& Mat);
void print(class sstd::mat <int>& Mat);
void print(class sstd::mat <uint>& Mat);
void print(class sstd::mat <float>& Mat);
void print(class sstd::mat<double>& Mat);

使用例

#include <sstd/sstd.hpp>

int main(){
    printf("■ Init sstd::mat<type>\n");
    printf("\n");
    
    sstd::mat<double> Matd(5, 3);
    printf("RowNum: %d\n", Matd.rows());
    printf("ColNum: %d\n", Matd.cols());
    printf("Length: %d\n", Matd.len());

    printf("Indication of column major\n");
    uint i=0;
    for(uint q=0; q<Matd.cols(); q++){
        for(uint p=0; p<Matd.rows(); p++){
            Matd(p, q) = i; i++;
        }
    }
    sstd::print(Matd);
    printf("\n");
    
    //===
    
    i=0;
    for(uint q=0; q<Matd.len(); q++){ Matd[i] = i; i++; }
    sstd::print(Matd);
    printf("\n");

    //===
    
    sstd::mat<double>* pMatd = new sstd::mat<double>(5, 3);
    printf("RowNum: %d\n", pMatd->rows());
    printf("ColNum: %d\n", pMatd->cols());
    printf("Length: %d\n", pMatd->len());

    printf("Indication of column major\n");
    i=0;
    for(uint q=0; q<pMatd->cols(); q++){
        for(uint p=0; p<pMatd->rows(); p++){
            (*pMatd)(p, q) = i; i++;
        }
    }

    sstd::print(*pMatd);
    printf("\n");
    delete pMatd;
    
    //===

    printf("■ copy\n");printf("\n");
    sstd::mat<double> Matd_copy = Matd;
    Matd_copy = Matd; // "sstd::copy(Matd_copy, Matd);" is called.
    sstd::print(Matd_copy); printf("\n");

    //===

    printf("■ copy row\n");printf("\n");
    sstd::mat<double> Matd_rowCopy(5, 3); sstd::zeros(Matd_rowCopy);
    Matd_rowCopy(1, ':') = Matd(1, ':');
    sstd::print(Matd_rowCopy); printf("\n");
    
    printf("■ copy col\n");printf("\n");
    sstd::mat<double> Matd_colCopy(5, 3); sstd::zeros(Matd_colCopy);
    Matd_colCopy(':', 2) = Matd(':', 2);
    sstd::print(Matd_colCopy); printf("\n");

    //===
    sstd::printn(Matd_colCopy); printf("\n");
    sstd::printn_all(Matd_colCopy); printf("\n");
}

実行結果

$ ./exe.exe
■ Init sstd::mat<type>

RowNum: 5
ColNum: 3
Length: 15
Indication of column major
 0.000000         5.000000        10.000000
 1.000000         6.000000        11.000000
 2.000000         7.000000        12.000000
 3.000000         8.000000        13.000000
 4.000000         9.000000        14.000000

 0.000000         5.000000        10.000000
 1.000000         6.000000        11.000000
 2.000000         7.000000        12.000000
 3.000000         8.000000        13.000000
 4.000000         9.000000        14.000000

RowNum: 5
ColNum: 3
Length: 15
Indication of column major
 0.000000         5.000000        10.000000
 1.000000         6.000000        11.000000
 2.000000         7.000000        12.000000
 3.000000         8.000000        13.000000
 4.000000         9.000000        14.000000

■ copy

 0.000000         5.000000        10.000000
 1.000000         6.000000        11.000000
 2.000000         7.000000        12.000000
 3.000000         8.000000        13.000000
 4.000000         9.000000        14.000000

■ copy row

 0.000000         0.000000        0.000000
 1.000000         6.000000        11.000000
 0.000000         0.000000        0.000000
 0.000000         0.000000        0.000000
 0.000000         0.000000        0.000000

■ copy col

 0.000000         0.000000        10.000000
 0.000000         0.000000        11.000000
 0.000000         0.000000        12.000000
 0.000000         0.000000        13.000000
 0.000000         0.000000        14.000000

Matd_colCopy =
 0.000000         0.000000        10.000000
 0.000000         0.000000        11.000000
 0.000000         0.000000        12.000000
 0.000000         0.000000        13.000000
 0.000000         0.000000        14.000000

TEST_mat(738): Matd_colCopy =
 0.000000         0.000000        10.000000
 0.000000         0.000000        11.000000
 0.000000         0.000000        12.000000
 0.000000         0.000000        13.000000
 0.000000         0.000000        14.000000

実装

sstd/src/MatrixStore_tmat