buffer clear

Type Function : BOOL

Input PT	POINTER TO BYTE (address of the Buffer )
SIZE	UINT (size of the buffer)
Output	BOOL (Returns TRUE)
The function _BUFFER_CLEAR initialize any array of Byte with 0. When called, a pointer to the array and its size in bytes is passed to the function. Under CoDeSys is the call	_BUFFER_CLEAR(ADR(Array), SIZEOF(Array)), where array is the name of the array to be manipulated. ADR() is a standard function which identifies the pointer to the array and SIZEOF() is a standard function, which determines the size of the array. The function only returns TRUE. The array specified by the pointer is manipulated directly in memory.
	This type of processing arrays is very efficient because no additional memory is required and no surrender values must be copied.

Example:

_ARRAY_CLEAR(ADRs(bigarray), SIZEOF(bigarray)) initialized bigarray with 0.