Create Fixed-Point Objects in MATLAB
fi and numerictype for
fixed-point data creationYou can create fixed-point data using the Fixed-Point Designer™
fi object. Within the fi
constructor, you can specify numerictype and
fimath properties. Each
fi object has an associated
numerictype object. The
numerictype object stores information about
the fi object including word length, fraction
length, and signedness. The numerictype object
is equivalent to the fixdt object in
Simulink®.
Functions
Classes
numerictype | Construct an embedded.numerictype object describing fixed-point
or floating-point data type |
Topics
Construct Fixed-Point Numeric Objects
Create Fixed-Point Data in MATLAB
Fixed point basics.
Perform Fixed-Point Arithmetic
Performing fixed-point arithmetic.
fi object display settings used in code examples.
Creation of fi objects.
Fixed-Point Versus Built-in Integer Types
Differences between fixed-point data types and built-in integer data types in MATLAB®.
Functions that operate directly on fi objects.
Defines the fi object properties.
Fixed-Point Math Settings
Creation of fimath objects.
Properties and property settings associated with fimath
objects.
fimath Properties Usage for Fixed-Point Arithmetic
Fixed-point arithmetic using fimath objects to control the
results.
fimath for Sharing Arithmetic Rules
Using a fimath object to share modular arithmetic
information among multiple fi objects.
fimath for Rounding and Overflow Modes
Order setting for overflow action and rounding method.
fimath ProductMode and SumMode
Differences among the different settings of the ProductMode
and SumMode properties.
Functions that ignore or discard fimath.
Fixed-Point Preferences
fi Object Display Preferences Using fipref
Examples of using fipref objects to set display preferences
for fi objects.
Data Type Override Preferences Using fipref
Data type override using the fipref object.
Underflow and Overflow Logging Using fipref
Examples of using fipref objects to set logging preferences
for fi objects.
Numeric Type Information
numerictype Object Construction
Construction of numerictype objects.
Properties and property settings associated with numerictype
objects.
numerictype of Fixed-Point Objects
Fields and settings for the numerictype object.
numerictype Objects Usage to Share Data Type and Scaling Settings of fi objects
Example of using a numerictype object to share modular data type
and scaling information among multiple fi objects.
Applications
Fixed-Point Design Exploration in Parallel
This example shows how to explore and test fixed-point designs by distributing tests across many computers in parallel.
Acquire real-time images from a webcam, process the images using fixed-point blob analysis, and determine world coordinates to score target practice using a laser pistol
Troubleshooting
Resolve Error: Mismatched fimath
Troubleshoot mismatched fimath errors.
Resolve Error: Data Type Mismatch
Troubleshoot data type mismatch errors.
Troubleshoot fi*non-fi errors.
fi Constructor Does Not Follow globalfimath Rules
Troubleshoot getting the fi constructor to follow
globalfimath rules.
