Procedures and Functions
Functions and procedures
Functions and procedures are pieces of execution code dedicated to a specific task that can be called either from within the graphical end-user interface or from within the model text. Both functions and procedures in AIMMS can have arguments. A function returns either a scalar value or an indexed set of values, and can be used inside expressions. Procedures are more general than functions in that they can have both multiple inputs and outputs. A procedure invocation is a single statement in AIMMS, and can be used to modify the values of global identifiers.
Procedures for initiating execution
Any computation that is part of your application must be started from
within a procedure. For simple applications, execution from within the
predefined procedure MainExecution is usually sufficient to perform
all tasks. However, in more complicated applications there are often
many entry points, and these can best be implemented as separate
procedures.
This chapter
This chapter describes how to construct and use procedures and functions
in the AIMMS language. Such procedures and functions are called
internal. In External Procedures and Functions you will find additional material on
how to link external functions and procedures written in FORTRAN
and C to your application.