Variable-Size Data

Definition and differences for code generation

Blocks

MATLAB Function	IncludeMATLABcode in models that generate embeddable C code
MATLAB System	IncludeSystem objectin model

coder.varsize Declare variable-size data

Code Generation for Variable-Size Arrays
Variable-size data is data whose size is not known at compile time or whose size can change at run time.
Control Support for Variable-Size Arrays in a MATLAB Function Block
Use the Property Inspector to enable or disable variable-size data support in a MATLAB Function block.
Declare Variable-Size Outputs
Use theSymbolspane to specify the size and upper bound of variable-size outputs.
Define Variable-Size Data for Code Generation
Choose a method for defining variable-size data.
Use Dynamic Memory Allocation for Variable-Size Arrays in a MATLAB Function Block
生成C/C++ code that uses dynamic memory allocation.
Control Memory Allocation for Variable-Size Arrays in a MATLAB Function Block
Disable dynamic memory allocation or specify a dynamic memory allocation threshold forMATLAB Functionblocks.
Specify Upper Bounds for Variable-Size Arrays
To avoid dynamic memory allocation, specify upper bounds for a variable-size array.
Incompatibilities with MATLAB in Variable-Size Support for Code Generation
Sometimes, the results for variable-size data in generated code are different than the results in MATLAB^®.
Variable-Sizing Restrictions for Code Generation of Toolbox Functions
Some restrictions for variable-size data apply to multiple toolbox functions.
Use a Variable-Size Signal in a Filtering Algorithm
Simulate a model that uses a variable-size vector to store the values of a white noise signal.

Troubleshoot size mismatch and upper bounds detection errors.