Data Definition Basics

How to define data, variables, and functions for code generation


MATLAB FunctionInclude MATLAB code in models that generate embeddable C code
MATLAB SystemInclude System object in model

Examples and How To

Reuse the Same Variable with Different Properties

Reuse a variable with different properties when the code generator can determine the properties of each occurrence of the variable.

Avoid Overflows in for-Loops

Use certain coding techniques to avoid overflow of the loop variable.

Eliminate Redundant Copies of Variables in Generated Code

Use coder.nullcopy to indicate that the code generator can allocate memory without initializing it.

Share Data Globally

Use global data with a MATLAB Function block.


Data Definition for Code Generation

Define data in MATLAB® code intended for code generation.

Variables Definition for Code Generation

Define the class, size, and complexity of variables in MATLAB source code before using them.

Best Practices for Defining Variables for C/C++ Code Generation

Follow guidelines for defining variables in MATLAB code intended for code generation.

Supported Variable Types

Use data types that code generation supports.

Reassignment of Variable Properties

Reassign a variable with a value of different class, size, or complexity.

Code Generation for Complex Data

Use complex data in MATLAB code intended for code generation.

Code Generation for Constants in Structures and Arrays

Sometimes the code generator does not recognize constant structure fields or array elements.

Array Size Restrictions for Code Generation

The code generator and the target hardware constrain the maximum number of elements of an array.

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