MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Podręcznik Użytkownika Pobierz pdf (Strona 173)

Noninlined S-Functions

4-7

Noninlined S-Functions

Noninlined S-functions are identified by the absence of an sfunction.tlc file

foryourS-function(

sfunction.mex). When pla cing a noninlined S-function in

a model that is to be used with the Real-Time Workshop, the following

MATLAB API functions are supported:

•

mxGetEps

• mxGetInf

• mxGetM

• mxGetN

• mxGetNaN

• mxGetPr — Note: using mxGetPr on a n empty matrix does not return NULL;

rather, it returns a random value. T herefore, you should protect calls to

mxGetPr with mxIsEmpty.

•

mxGetScalar

• mxGetString

• mxIsEmpty

• mxIsFinite

• mxIsInf

In addition, parameters to S-functions can only b e of type double precision or

characters contained in scalars, vectors, or 2-D matrices. To obtain more

flexibility in the type of parameters you can supply to S-functions or the

operations in the S-function, you need to inline your S-function and (possibly)

use a

mdlRTW S-function routine.

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MATLAB SIMULINK 7 - DEVELOPING S-FUNCTIONS Podręcznik Użytkownika Strona 173