関数diagonal_matrix_times_matrix マニュアル

(The documentation of function diagonal_matrix_times_matrix)

Last Update: 2021/12/6


◆機能・用途(Purpose)

対角行列と行列の積を計算する。
Calculate the product of a diagonal matrix and a matrix.


◆形式(Format)

#include <matrix/operation.h>
inline struct matrix diagonal_matrix_times_matrix
(const struct diagonal_matrix Lambda,const struct matrix B)


◆引数(Arguments)

Lambda 積の計算に用いる対角行列Λ
A diagonal matrix Λ used in the calculation of the product.
B 積の計算に用いる行列B。 行数はΛの列数と等しくなければならない。
A matrix B used in the calculation of the product. The number of rows of B must be equal to the number of columns of Λ.


◆戻り値(Return value)

行列ΛBを表す構造体。 戻り値のメンバの値は以下のようになる。
A structure which represents a matrix ΛB. The values of members of the return value are as follows.

戻り値のメンバ
Member of the return value

Value
rowmax Lambda.rowmax
columnmax B.columnmax
i, jに対するmain[i][j]
main[i][j] for each i and j
Lambda.main[i]∗B.main[i][j]
allocated ’y’


◆使用例(Example)

struct diagonal_matrix Lambda;
struct matrix B;
struct matrix C=diagonal_matrix_times_matrix(Lambda,B);