National Instruments NI MATRIX Using System-Level Parameters to Generate Instantiations, Using Subsystem-Level Parameters to Generate Instantiations

Chapter 3 Ada Language Reference

For these types of conversions, the language-defined conversion is used.

In general, when an explicit conversion is required and there is no

specification of which to choose, AutoCode/Ada will select the explicit

rounding conversion.

Using System-Level Parameters to Generate Instantiations

Before you can use the system-level parameters to generate operator or

conversion instantiations, all of the subsystems and procedures must be

generated. Simply scoping to a subsystem or procedure is not sufficient.

Code must be generated so that the exact operators and conversion used in

the subsystem or procedure can be determined and recorded.

After all of the subsystems and procedures are generated, you must call the

tpl function collect_fxpdata( ). Until this function is called, all of

the fxp parameters are empty. After being called, all of the operators and

conversions used in the whole model are placed into the system-level fxp

parameters. No assumptions can be made about the order within a given list

parameter. However, the nth element in one list does relate to the nth

element in another list, depending on the purpose of the lists.

For the fxp_operatorid_li and fxp_conversionid_li parameters,

these contain the type of operator or conversion to be instantiated.

However, the lists might contain duplicates. An operator or conversion

instantiation cannot be declared twice in the package specification. Thus,

duplicate operators or conversions must not be generated. Therefore, any

operator or conversion identifier with a value of 1,000 or larger must not be

instantiated.

In addition to containing all of the operators and conversion for all of the

subsystems and procedures in a model, the list can contain other operators

or conversions that are used in the standard packages, such as the scheduler

or system data package.

Using Subsystem-Level Parameters to Generate Instantiations

Before you can use the subsystem/procedure-level parameters to generate

operator or conversion instantiations, all of the subsystems and procedures

must be code generated. Simply scoping to a subsystem or procedure is not

sufficient. Code must be generated so the exact operators and conversion

used in the subsystem or procedure can be determined and recorded.

After all of the subsystems and procedures are generated, you must call the

tpl function collect_fxpdata( ). Until this function is called and a

subsystem or procedure is scoped, all of the sp_fxp parameters are empty.