ADVANCED: memcpy (Function)

memcpy will copy the contents of one memory area to another memory area.

Please note that memcpy does not support the copying of overlapped source and destination.

Input:

dst : PTR

Pointer to the destination memory.

src : PTR

Pointer to the source memory.

len : INT

Number of bytes to be copied.

Returns:

None

Declaration:

FUNCTION memcpy;
VAR_INPUT
  dst : PTR;
  src : PTR;
  len : INT;
END_VAR;

Example:

INCLUDE rtcu.inc
 
VAR
  data_1 : ARRAY[0..100] OF SINT;
  data_2 : ARRAY[0..100] OF SINT;
END_VAR;
 
PROGRAM test;
 
BEGIN
  ...
memcpy(dst:=ADDR(data_1), src:=ADDR(data_2), len:=SIZEOF(data_1));
  // data_1 contains now the contents of data_2
  ...
END;
 
END_PROGRAM;