pTAL Reference Manual (H06.08+)

Built-In Routines

HP pTAL Reference Manual—523746-006

15-83

$SGBADDR_TO_EXTADDR

$SGBADDR_TO_EXTADDR converts an SGBADDR or SGXBADDR address to an

EXTADDR address.

expression

is an expression whose value is an SGBADDR or SGXBADDR address.

$SGBADDR_TO_EXTADDR returns expression converted to an EXTADDR

address.

$SGBADDR_TO_SGWADDR

$SGBADDR_TO_SGWADDR converts an SGBADDR or SGXBADDR address to an

SGWADDR address.

Example 15-80. Using the $SCALE Routine to Maintain Precision

FIXED(3) num, a, b; ! fpoint of 3

num := $SCALE (a,3) / b; ! Scale a to FIXED(6); result is a

! FIXED(3) value

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW No

Example 15-81. $SGBADDR_TO_EXTADDR Routine

STRING .SG s;

INT .EXT i;

INT j;

@i := $SGBADDR_TO_EXTADDR(@s[j]); !??: OK if @s[j] is at an

! even-byte offset;

! otherwise, @i is undefined.

expression

( )

VST603.vsd

$SGBADDR_TO_EXTADDR

expression

( )

VST604.vsd

$SGBADDR_TO_SGWADDR