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Update matrix.cpp

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bjyb 2023-09-19 14:23:25 +08:00
parent 8f4aea4f0b
commit 41d9fcfd26
1 changed files with 8 additions and 0 deletions
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src/gausskernel/dbmind/db4ai/executor/matrix.cpp
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@ -21,6 +21,14 @@
* ---------------------------------------------------------------------------------------
*/
/*Matrix refers to a set of complex numbers or real numbers arranged in a rectangular array in mathematics.
It originated from the square matrix composed of coefficients and constants of equations. It was first proposed
by the 19th century British mathematician Kelly. It is a common tool in advanced algebra, and its operation is
an important problem in the field of numerical analysis. Decomposition of a matrix into a combination of simple
matrices can simplify the operation of the matrix in theory and practical application.
For a matrix, at least the following operations should be included: addition, multiplication, transposition, eigenvalue
calculation, and for a square matrix, determinant calculation is also required.*/
#include "db4ai/matrix.h"
#define MATRIX_LIMITED_OUTPUT 30