TAL Reference Manual

Standard Functions

TAL Reference Manual—526371-001

14-13

Examples of $DBLL Function

1. In this example, $DBLL returns an INT(32) value formed from two INT variables,

FIRST_INT and SECOND_INT:

INT first_int, second_int; !Declare variables

INT(32) some_double;

some_double := $DBLL (first_int, second_int);

!Return INT(32) value

2. In this example, $DBLL returns an extended (32-bit) address from two INT

constants that represent a standard (16-bit) address in the current user code

segment:

INT .EXT p; !Declare 32-bit simple

! pointer

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

! user code segment

$DBLR Function

The $DBLR function returns an INT(32) value from an INT, FIXED(0), REAL, or

REAL(64) expression and applies rounding to the result.

expression

is an INT, FIXED(0), REAL, or REAL(64) expression.

Usage Consideration

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

integer, $DBLR sets the overflow indicator.

Examples of $DBLR Function

1. In this example, $DBLR returns a rounded INT(32) value from a REAL expression:

REAL r2 := 1.5e0; !Declare variables

INT(32) b32;

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

$DBLR ( expression

)

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