User`s guide

Introduction
1-15
The simulink/src directoryalsocontainsexamplesofCMEXS-functions,
many of which have an M-file S-function counterpart. These C MEX
S-functions are listed in this table.
sfun_varargm.m
This isanexample M-file S-functionshowinghow to
use the MATLAB
vararg facility.
vlimintm.m
An example of a continuous limited integrator
S-function.This illustrates howto usethe sizee ntry
of
−1 to build an S-function that can accommodate a
dynamic input/state width.
vdlimintm.m
An example of a discrete limited integrator
S-function. This example is identical to
vlimint.m,
except that the limited integrator is discrete.
Table 1-3: Example C MEX S-Functions
Filename Description
timestwo.c
A basic C MEX S -functio n that double s its input.
csfunc.c
An example C MEX S-function for defining a
continuous system.
dsfunc.c
An example C MEX S-function for defining a
discrete system.
dlimint.c
Implements a discrete-t ime limited i n te grator.
vsfunc.c
Illustrates how t o create a varia ble step block in
Simulink. T h is block im pleme n ts a variable step
delay in which the first input is delayed by an
amount of time determined by the second input.
mixed.c
Implements a hybrid dynamica l system consisting
of a continuous integrator (1/s) i n series with a unit
delay (1/z ).
Table 1-2: Example M-File S-Functions (Continued)
Filename Description