Fixed-Point Data

Efficient approximations for non-floating-point values

Fixed-point numbers use an integer-based encoding scheme to approximate real numbers. They provide an efficient alternative for numeric computation that does not require floating-point support in underlying system hardware. Minimize the loss of precision in computations by adjusting the encoding scheme.

Topics

Fixed-Point Data in Stateflow Charts

Define fixed-point data in Stateflow^® charts.

Fixed-Point Operations in Stateflow Charts

Use integer arithmetic to approximate real numbers.

Supported Operations for Fixed-Point Data

Perform mathematical computations on fixed-point operands.

Handle Integer Overflow for Chart Data

Choose saturation or wrapping behavior for arithmetic overflows.

Featured Examples

Fixed-Point Mandelbrot Set

The difference between fixed-point and floating-point computation by displaying the result of computing the Mandelbrot set using each data type.

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Using Multiword Fixed-Point Data

A simple use of multiword fixed-point data in Stateflow® charts. You can define multiword fixed-point data at the chart level, with one of the following scopes:

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Model Bang-Bang Temperature Control System

Model a bang-bang control system that regulates the temperature of a boiler. The model has two components: Boiler Plant Model is a Simulink® subsystem the models the boiler dynamics.

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Build a Low-Pass Filter by Using Fixed-Point Data

Model a low-pass Butterworth filter that uses fixed-point arithmetic.

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