pTAL Reference Manual (H06.03+)

Built-In Routines

HP pTAL Reference Manual—523746-005

15-85

$SGWADDR_TO_SGBADDR

$SGWADDR_TO_SGBADDR converts an SGWADDR or SGXWADDR address to an

SGBADDR address.

expression

is an expression whose value is an SGWADDR or SGXWADDR address.

If expression is not an address in the lower half of the 64K word segment, the

address returned by $SGWADDR_TO_SGBADDR is undefined.

$SPECIAL

$SPECIAL tests the right byte of an INT value for the presence of an ASCII special

(nonalphanumeric) character (see Table 2-1 on page 2-2).

Example 15-83. $SGWADDR_TO_EXTADDR Routine

STRING .EXT s;

INT .SG i;

@s := $SGWADDR_TO_EXTADDR(@i);

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW No

Example 15-84. $SGWADDR_TO_SGBADDR Routine

STRING .SG s;

INT .SG i;

@s := $SGWADDR_TO_SGBADDR(@i); !OK: OK if i is in the

! lower half of system globals

expression( )

VST690.vsd

$SGWADDR_TO_SGBADDR

( )

VST111.vsd

$SPECIAL int-expression