pTAL Reference Manual (H06.03+)

Built-In Routines

HP pTAL Reference Manual—523746-005

15-9

$ATOMIC_OR

$ATOMIC_OR performs an atomic LOR on two INT values.

var input,output

INT:variable

is the variable to which $ATOMIC_OR applies mask.

mask input

INT:value

is a 16-bit mask that $ATOMIC_OR applies to var.

$ATOMIC_OR performs the following statement:

var := var LOR mask

The read, LOR, and store operations are performed without interruption, as if the three

operations were one.

The following table shows examples of $ATOMIC_OR:

Sets condition code Yes (according the final value of var )

Sets $CARRY No

Sets $OVERFLOW No

Example 15-7. $ATOMIC_OR Routine

INT var;

INT mask;

$ATOMIC_OR(var, mask);

var mask result

%H1234 %HAAAA %HBABC

%H1234 %H5555 %H5775

%H6789 %HAAAA %HEFAB

%H6789 %H5555 %H77DB

$ATOMIC_OR ( , ) ;

VST611.vsd

var mask