Create a model with subsystem or variant models. Generate code that contains preprocessor conditionals that control the activation of each variant choice.

Specify dimension information as symbols in blocks and data objects. These symbols propagate throughout the model during simulation and then go into the generated code.

This example shows how to generate a C code that contains all the active and inactive values of variant parameters. The values are enclosed in preprocessor conditionals #if and #elif that enables you to compile the code conditionally based on the condition that evaluates to true.

Generate code that contains preprocessor conditionals that control the activation of each variant choice and allow for no active variant choice.

Generate C code from Simulink^® models having variant condition values of enumerated type.

Configure S-functions to support forward propagation, backward propagation, or forward and backward propagation of symbolic dimensions during simulation.

Generate code containing preprocessor conditionals that control the active variant choice for a Simulink model containing variant blocks.

Define variant control variables and configure model for generating preprocessor conditional directives.

This example shows how to use symbolic dimensions to generate code for a variant subsystem consisting of child subsystems of different output signal dimensions.

この例では、プリプロセッサの条件によって、どのコードが組み込み実行ファイルのリンク先になるかを制御するために、コードを生成するモデル バリアントの利用方法を説明します。

You can use enumerated types to improve code readability of variant control values in variant parameters. Simulink 列挙型 improve readability because enumerated types of variant controls values are represented as meaningful names instead of integers in the generated code.

This example shows how to use Simulink.Parameter variables to generate a code that imports variant parameter values from your existing code. Importing variant parameter values allows you to reuse the values that your existing code defines. You can then integrate and compile the generated and existing code into a single executable. You can choose to generate a code that imports variant parameter values at the beginning of code compile, simulation-loop, or model startup phases of simulation and code generation workflows based on the activation time you specify. For more information, see Activate Variant During Different Stages of Simulation and Code Generation Workflow.