pTAL Reference Manual (H06.03+)

Built-In Routines

HP pTAL Reference Manual—523746-005

15-35

$DBLL

$DBLL converts to INT values an INT(32) value.

int-expression

is an INT expression.

To form the INT(32) value, $DBLL places the first int-expression in the high-order

16 bits and the second int-expression in the low-order 16 bits.

Example 15-21. $DBL Routine

INT .EXT i;

EXTADDR e;

INT(32) j;

j := $DBL(e); ! OK: e is type EXTADDR

j := $DBL(@i); ! OK: @i is type EXTADDR

j := $DBL(i); ! OK: i is type INT

j := $DBL(@j); ! ERROR: @j is type WADDR

j := $DBL(@e); ! ERROR: @e is type WADDR

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW No

Example 15-22. $DBLL Routine

INT first_int, second_int;

INT(32) some_double;

INT .EXT p; ! 32-bit simple pointer

some_double := $DBLL (first_int, second_int);

! Return INT(32) value

@p := ($DBLL (2, 7)) '<<' 1; ! Return 32-bit address in

! user code segment

DBLL

( int-expression , int-expression )

VST079.vsd