Class: matlab.system.mixin.Nondirect
Package: matlab.system.mixin
Direct feedthrough status of input
[flag1,...,flagN] = isInputDirectFeedthroughImpl(obj,u1,u2,...,uN)
[flag1,...,flagN] = isInputDirectFeedthroughImpl(obj,u1,u2,...,uN)
specifies whether each input is a direct feedthrough input. If direct feedthrough is
true, the output depends on the input at each time instant.
You must set Access = protected for this method.
You cannot modify any properties or implement or access tunable properties in this method.
If you do not include the isInputDirectFeedthroughImpl
method in your System
object™ class definition file, all inputs are assumed to be direct feedthrough.
The following cases describe when System objects in Simulink® code generation use direct or nondirect feedthrough.
System
object supports code generation and does not inherit from the Propagates mixin — Simulink automatically infers the direct feedthrough settings from the
System
object code.
System
object supports code generation and inherits from the Propagates mixin — Simulink does not automatically infer the direct feedthrough settings.
Instead, it uses the value returned by the isInputDirectFeedthroughImpl method.
System
object does not support code generation — Default isInputDirectFeedthroughImpl method returns false, indicating that direct feedthrough is not enabled. To
override the default behavior, implement the isInputDirectFeedthroughImpl method
in your class definition file.
isInputDirectFeedthroughImpl is called by the MATLAB System
block.
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System object handle |
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Specifications of the inputs to the algorithm. |
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Logical value or either |