Basically I have this Problem like in C decribed here for Structured Text.
So in C I can do this to copy vector c into matrix rows a :
int a[100][100];
int c[10][10];
int i;
for(i = 0; i<10; i++)
{
memcpy(&a[i], &c[i], sizeof(c[0]));
}
How to do this in Structured Text? My analogous Approach does not work so far. (Compiler Error: to less indices for field a).
VAR
a: ARRAY[0..99,0..99] OF REAL; (*2D array*)
c : ARRAY[0..99] OF REAL; (*1D array*)
END_VAR
FOR i:=0 TO 99 DO
memcpy(ADR(a[i]), ADR(c[i]), SIZEOF(c[0]));
END_FOR
2 Answers
Are you trying to copy c into a?
For the a array, you need both indexes, like this:
memcpy(ADR(a[i,0]).....
Please test. I believe this is how I remember it, but not by my computer.
If I understand well, you would like to copy 1 dimension array (1x99 = 99 elements) to a 99 dimension array (99x99 = 9801 elements). You can copy the first array (1 dimension) in the first row o column (or vicerversa), the second in the second... etc.
If this is your porpouse you can try this code:
VAR
i: INT; //auxiliar
j: INT; //auxiliar
origin : ARRAY[0..9] OF REAL; //origin data
destiny: ARRAY[0..9,0..9] OF REAL; //destiny
END_VAR
FOR i := 0 TO 9 DO
FOR j := 0 TO 9 DO
//Copy the origin array to the first column, second, etc of destiny array
destiny[i,j] := origin[i];
END_FOR;
END_FOR;
I've tested it on my computer (using codesys) and it works, but I don't know if is this you are looking for...
