MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Guide de l'utilisateur télécharger pdf (Page 172)

4 Guidelines for Writing C MEX S-Functions

4-6

files),it embedssomeo f thisoverhead code inthe generatedC code.Ifyou want

to optimize your real-time code and elimi nate s ome o f the overhead code, you

must inline (or embed) your S-functions. This involves writing a TLC

(

sfunction.tlc) file that directs the Real-Time Workshop to eliminate all

overhead code from the generated code. The TargetLanguage Compiler, which

is pa rt of the Real-Time Workshop, processes

sfunction.tlc files to define

how to inline your S-function algorithm in the generated code.

Note The term inline should not be confused w ith the C++ inline keyword. In

MathWorks terminology, inl ine means to specify a textual string in place of

the call to the general S-function API routines (e.g.,

mdlOutputs). For example,

when we say that a TLC fil e is used to inline an S-function, we mean that the

generated code contains the appropriate C code that would normally appear

within t he S-function routines and the S-function itself has been removed

from the build process.

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MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Guide de l'utilisateur Page 172