Fixed-Point Conversion

Convert floating-point code to fixed point, optimize fixed-point data types (requires Fixed-Point Designer™)

If you have the Fixed-Point Designer product, to meet target hardware constraints, generate fixed-point C/C++ code.

Classes

coder.FixPtConfig Floating-point to fixed-point conversion configuration object

`coder`	Open MATLAB Coder app
`codegen`	Generate C/C++ code from MATLAB code
`coder.config`	Create code generation configuration objects
`coder.approximation`	Create function replacement configuration object
`coder.float2fixed.skip`	Exclude functions from fixed-point conversion (Since R2024b)

Automated Fixed-Point Conversion
Using the command line to perform automated fixed-point conversion.
Automated Fixed-Point Conversion Best Practices
Generate fixed-point code according to best practices.
MATLAB Language Features Supported for Automated Fixed-Point Conversion
For automated fixed-point conversion, use supported MATLAB^® language features.
Fixed-Point Code for MATLAB Classes
Use supported constructs and coding style best practices for fixed-point conversion of MATLAB classes.
Convert MATLAB Code to Fixed-Point C Code
Generate fixed-point C code with codegen.
Convert Fixed-Point Conversion Project to MATLAB Scripts
Use project settings for fixed-point conversion at the command line.

Specify Type Proposal Options
Specify options used when proposing types for automated fixed-point conversion.
Propose Fixed-Point Data Types Based on Simulation Ranges
Propose fixed-point data types based on simulation ranges using the codegen function.
Propose Fixed-Point Data Types Based on Derived Ranges
Propose fixed-point data types based on static ranges using the codegen function.

Replacing Functions Using Lookup Table Approximations
Generate lookup table approximations to replace custom functions or functions that are not supported for fixed point.
Replace the exp Function with a Lookup Table
Replace a function with a lookup table approximation in fixed-point code generated with the codegen function.
Replace a Custom Function with a Lookup Table
Replace a custom function with a lookup table approximation function by using the codegen function.

Visualize Differences Between Floating-Point and Fixed-Point Results
Use a custom plot function to compare the behavior of the generated fixed-point code against the behavior of the original floating-point MATLAB code.
Enable Plotting Using the Simulation Data Inspector
Inspect and compare floating-point and fixed-point logged input and output data.
Custom Plot Functions
Visualize numerical differences during fixed-point conversion.
Detect Overflows
Detect overflows at the command line.

Generated Fixed-Point Code
Avoid issues with generated fixed-point code.
Data Type Issues in Generated Code
Highlight potential data type issues in report.

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