Chapter 3 Analysis Library
© National Instruments Corporation 3-23 LabWindows/CVI Standard Libraries
MatrixMul
int status = MatrixMul (void *matrixX, void *matrixY, int #ofRowsInX,
int cols/rowsInX/Y, int #ofColumnsInY,
void *outputMatrix);
Purpose
Multiplies two 2D input matrices. The function obtains the (ith, jth) element of the output matrix
by using the following formula.
zxy
ij ip pj
p
k
,,,
=∗
=
−
∑
0
1
Parameters
Input matrixX double-precision 2D
array matrixX input matrix.
matrixY double-precision 2D
array matrixY input matrix.
#ofRowsInX integer First dimension of matrixX.
cols/rowsInX/Y integer Second dimension of matrixX.;
first dimension of matrixY.
#ofColumnsInY integer Second dimension of matrixY.
Output outputMatrix double-precision 2D
array Output matrix.
Return Value
status integer Refer to error codes in
Table 3-2.
Parameter Discussion
Note: Be sure to use the correct array sizes. The following array sizes must be met:
•matrixX must be (#ofRowsInX by cols/rowsInX/Y).
•matrixY must be (cols/rowsInX/Y by #ofColumnsInY).
•outputMatrix must be (#ofRowsInX by #ofColumnsInY).