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Conversion manuelle en virgule fixe dans MATLAB

Conversion assistée d’un algorithme virgule flottante en algorithme virgule fixe

Utilisez la fonction buildInstrumentedMex pour instrumenter votre algorithme afin d'enregistrer les valeurs minimale et maximale de toutes les variables nommées et intermédiaires. Utilisez la fonction showInstrumentationResults pour proposer des types de données à virgule fixe en fonction des valeurs enregistrées.

Fonctions

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buildInstrumentedMexGenerate compiled C code function including logging instrumentation
showInstrumentationResultsResults logged by instrumented, compiled C code function
clearInstrumentationResultsClear results logged by instrumented, compiled C code function
fiCreate fixed-point numeric object
fimathSet fixed-point math settings
numerictypeCreate an embedded.numerictype object describing fixed-point or floating-point data type
eyeCreate identity matrix with fixed-point properties
onesCreate array of all ones with fixed-point properties
zerosCreate array of all zeros with fixed-point properties
castCast variable to different data type
cast64BitFiToIntCast fi object types that can be exactly represented to a 64-bit integer data type
cast64BitIntToFiCast 64-bit integer types to an equivalent fi object type
castFiToIntCast fi object to equivalent integer data type
castFiToMATLABCast fi object type to an equivalent built-in MATLAB data type
castIntToFiCast an integer data type to equivalent fi type

Rubriques

Informations connexes

Résolution des problèmes

Resolve Error: Function Is Not Supported for Fixed-Point Conversion

Troubleshoot functions that are not supported for fixed-point conversion.

Resolve Error: fi*non-fi

Troubleshoot fi*non-fi errors.

Resolve Error: Data Type Mismatch

Troubleshoot data type mismatch errors.

Resolve Error: Mismatched fimath

Troubleshoot mismatched fimath errors.

Sélection d՚exemples

Set Data Types Using Min/Max Instrumentation

Set Data Types Using Min/Max Instrumentation

Set fixed-point data types by instrumenting MATLAB code for min/max logging and using the tools to propose data types.

Convert Fast Fourier Transform (FFT) to Fixed Point

Convert Fast Fourier Transform (FFT) to Fixed Point

Convert a version of the Fast Fourier Transform (FFT) algorithm into fixed-point MATLAB code.

Implement FIR Filter Algorithm for Floating-Point and Fixed-Point Types Using cast and zeros

Implement FIR Filter Algorithm for Floating-Point and Fixed-Point Types Using cast and zeros

Convert a finite impulse-response (FIR) filter to fixed point by separating the fixed-point type specification from the algorithm code.