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csuCommonMatrix.h File Reference

#include "csuCommon.h"

Go to the source code of this file.

Namespaces
namespace	csu
Defines
#define	ME(mat, i, j)   ( (mat)->cols[j][i] )
#define	SAVE_MATRIX(mat)   saveMatrixAscii(NULL, #mat, mat, asciiFormat)

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Define Documentation

#define ME (  mat, i, j    )     ( (mat)->cols[j][i] )

ME (Matrix Element) is used to access a matrix element: implements dope vector expansion Remember that a matrix is stored by columns. There are two versions of ME avaible and they are toggled with the range check definition below (MATRIX_RANGE_CHECK). When MATRIX_RANGE_CHECK is enabled it will cause a function to be called that will check that the element to be accessed is in the correct range (determined by ->row_dim and ->col_dim) if it is not a nice error message will be printed indicating file, function and line number where the error occurred and the program will exit. Range checking is great for debugging however it is also rather expensive (function call and compares) especially within the nested loops of a matrix multiply. Matrix A; index i,j

#define SAVE_MATRIX (  mat    )     saveMatrixAscii(NULL, #mat, mat, asciiFormat)

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