pTAL Reference Manual (H06.03+)

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Built-In Routines

HP pTAL Reference Manual—523746-005

15-36

$DBLR

$DBLR

$DBLR converts its argument to an INT(32) value and rounds the result.

expression

is an INT, INT(32), FIXED, REAL, or REAL(64) expression.

If expression is too large to be represented by a 32-bit two’s complement integer,

$DBLR traps if overflow traps are enabled (see Section 13, Hardware Indicators);

otherwise, $DBLR ignores the problem.

$DFIX

$DFIX converts an INT(32) value to a FIXED(fpoint ) value.

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW No

Example 15-23. $DBLR Routine

REAL r2 := 1.5e0;

INT(32) b32;

REAL realnum := 123.456E0;

INT(32) dblnum;

b32 := $DBLR (r2); ! Return 2d

dblnum := $DBLR (realnum); ! Return 123D

pTAL privileged procedure No

Can be executed only by privileged procedures No

Sets condition code No

Sets $CARRY No

Sets $OVERFLOW Yes

expression( )

VST080.vsd

$DBLR

( )

VST081.vsd

,

$DFIX

dbl-expression fpoint