Festkomma-Codegenerierung in Simulink
R2026bSie können Simulink® Coder™ oder Embedded Coder® verwenden, um mit Fixed-Point Designer™ C Code zu generieren. Der aus Festkomma-Modellen generierte Code verwendet nur Integertypen und umfasst automatisch alle Operationen wie Verschiebungen, die aufgrund von Unterschieden in den Festkommastellen erforderlich sind. Sie können den generierten Code auf Festkomma-Embedded-Prozessoren oder Rapid-Prototyping-Systemen verwenden, auch wenn diese einen Gleitkomma-Prozessor umfassen.
Bei der Verwendung mit HDL Coder™ können Sie mit Fixed-Point Designer bit-echten, synthesierbaren Verilog®- und VHDL®-Code aus Simulink-Modellen, Stateflow®-Diagrammen und MATLAB Function-Blöcken generieren.
Themen
Modellieren für Hochleistungscode
- Lookup Table Optimization
Optimize lookup tables in your model to improve efficiency. - Selecting Data Types for Basic Operations
How to select efficient data types for basic fixed-point operations. - Fixed-Point Code Generation Support
Simulink features supported for fixed-point code generation. - Use Simplest Rounding for Efficient Generated Code
The simplest rounding mode attempts to reduce or eliminate the need for extra rounding code in your generated code using a combination of techniques.
Integrieren von MATLAB Programmcode
- Control Data Types and Generate Code with MATLAB Function Block
Use data type override andfimathobjects with the MATLAB Function block. - Generate Fixed-Point FIR Code Using MATLAB Function Block
Create and generate code for a fixed-point, low-pass, direct form FIR filter.
Verwenden des Model Advisor
- Optimize Generated Code with the Model Advisor
Use the Model Advisor to identify model settings that might lead to non-optimal results in code generation. - Net Slope Computation
Control how the software handles net slope computations in generated code.
Anpassen von generiertem Code
- Control the Generation of Fixed-Point Utility Functions
Control the generation of fixed-point utility functions using specified minimum and maximum values.
Einhaltung von Standards
- Use of Shifts by C Code Generation Products
Understand the use of shifts by MathWorks® coder products including how to control the shifts using optimization settings in the configuration parameters as well as modeling techniques.
Fehlersuche
Targeting an Embedded Processor
Describes issues that arise when targeting a fixed-point design for use on an embedded processor.
Data types supported for simulation and code generation.
Enthaltene Beispiele
Fixed-Point Optimizations Using Specified Minimum and Maximum Values
Optimize fixed-point operations in generated code using minimum and maximum values that you specify in a model. Minimum and maximum values can represent environmental limits or mechanical limits, such as the output ranges of sensors. The code generation software can use these values to create more efficient code by eliminating unreachable code branches and unnecessary utility functions.
Fixed-Point Multiword Operations in Generated Code
Control generation of multiword operations in generated code.
Fixed-Point Multiplication Helper Functions in Generated Code
Control the generation of multiplication helper functions in the generated code.
Specify Fixed-Point Math Properties in MATLAB Function Block
Specify fixed-point math properties in a MATLAB Function block. You can specify fimath properties to add fixed-point numbers without bit growth. The same methods also apply to subtraction and multiplication.
