TAL Reference Manual

Equivalenced Variables

TAL Reference Manual—526371-001

10-2

Equivalenced Simple Variable

An equivalenced simple variable declaration associates a new simple variable with a

previously declared variable.

type

is any data type except UNSIGNED.

identifier

is the identifier of a simple variable to be made equivalent to previous-identifier.

previous-identifier

is the identifier of a previously declared simple variable, array, simple pointer,

structure, structure pointer, or equivalenced variable.

index

is an INT constant that specifies an element offset from previous-identifier, which

must be a direct variable. The data type of

previous-identifier dictates the element

size. The location represented by

index must begin on a word boundary.

offset

is an INT constant that specifies a word offset from previous-identifier, which can

be a direct or indirect variable. If

previous-identifier is indirect, the offset is from the

location of the pointer, not from the location of the data pointed to.

Usage Consideration

Avoid equivalencing a simple variable to an indirect array or structure. If you do so, the

simple variable is made equivalent to the location of the implicit pointer, not the location

of the data pointed to.

VST1001.vsd

[

index

]

offset

;

previous-identifier

identifiertype