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Automated Fixed-Point Conversion in MATLAB

Conversion to fixed point using the Fixed-Point Converter app

The Fixed-Point Converter app enables you to convert floating-point MATLAB® code to fixed-point MATLAB code.

Use fiaccel to convert floating-point MATLAB code to fixed-point MATLAB code at the command line.


Fixed-Point ConverterConvert MATLAB code to fixed point


fiaccelAccelerate fixed-point code or convert floating-point MATLAB code to fixed-point MATLAB code
coder.configCreate configuration object for fixed-point or single-precision conversion
coder.approximationCreate function replacement configuration object
coder.allowpcodeControl code generation from P-code files
coder.constFold expressions into constants in generated code
coder.extrinsicDeclare function as extrinsic and execute it in MATLAB
coder.inlineControl inlining of current function in generated code
coder.inlineCallInline called function in generated code (Since R2024a)
coder.loadLoad compile-time constants from MAT-file or ASCII file
coder.newtypeCreate coder.Type object to represent type of an entry-point function input
coder.nonInlineCallPrevent inlining of called function in generated code (Since R2024a)
coder.nullcopyDeclare uninitialized variables in code generation
coder.resizeResize coder.Type object
coder.targetDetermine if code generation target is specified target
coder.typeofCreate coder.Type object to represent the type of an entry-point function input
coder.unrollUnroll for-loop by making a copy of the loop body for each loop iteration
coder.varsizeDeclare variable-size data


coder.mexconfigCode acceleration configuration object for use with fiaccel
coder.FixPtConfigFloating-point to fixed-point conversion configuration object
coder.ArrayTypeRepresent set of MATLAB arrays acceptable for input specification
coder.ConstantSpecification of constant value for code generation
coder.EnumTypeRepresent set of MATLAB enumerations acceptable for input specification
coder.FiTypeRepresent set of MATLAB fixed-point arrays acceptable for input specification
coder.PrimitiveTypeRepresent set of logical, numeric, or character arrays acceptable for input specification
coder.StructTypeRepresent set of MATLAB structure arrays acceptable for input specification
coder.TypeRepresent set of MATLAB values acceptable for input specification


Automated Fixed-Point Conversion Workflow

Propose Fixed-Point Types

Convert to Fixed Point

Verify Fixed-Point Conversion

Supported Language Features

Command Line Workflow


Generated Fixed-Point Code

Avoid issues with generated fixed-point code.

Data Type Issues in Generated Code

Highlight potential data type issues in report.

Debug Numerical Issues in Fixed-Point Conversion Using Variable Logging

Learn how to debug your fixed-point code when you need more than out of the box conversion.

Why Does the Fixed-Point Converter App Not Propose Data Types for System Objects?

Troubleshoot missing data type proposals for System objects.

Slow Operations in the Fixed-Point Converter App

Determine whether code generation readiness screening is causing slow operations in the app.