Simulink® Fixed Point™

Product Overview

The Simulink^® Fixed Point™ software enables the intrinsic fixed-point capabilities of the following products across the Simulink^® product family:

• Simulink

• Stateflow^®

• Signal Processing Blockset™

• Communications Blockset™

• Target Support Package™ TC2

• Target Support Package TC6

• Target Support Package IC1

• Target Support Package FM5

• Video and Image Processing Blockset™

The following products can be used to generate fixed-point code when used with the Simulink Fixed Point software:

• Real-Time Workshop^®

• Real-Time Workshop^® Embedded Coder™

• Simulink^® HDL Coder™

• Stateflow^® Coder™

• xPC Target™

You can use the Simulink Fixed Point software with Simulink products to simulate effects commonly encountered in fixed-point systems for applications such as control systems and time-domain filtering. The Simulink Fixed Point software includes these major features:

• Integer, fractional, and generalized fixed-point data types

  • Unsigned and two's complement formats

  • Word sizes in simulation from 1 to 128 bits

• Floating-point data types

  • IEEE-style singles and doubles

  • A nonstandard IEEE-style data type, where the fraction can range from 1 to 52 bits and the exponent can range from 1 to 11 bits

• Methods for overflow handling, scaling, and rounding of fixed-point data types

• Tools that facilitate

  • Collection of minimum and maximum simulation values

  • Optimization of scaling parameters

  • Display of input and output signals

In addition, you can generate C code and HDL code for execution on a fixed-point embedded processor with the Real-Time Workshop product. The generated code uses only integer types and automatically includes all operations, such as shifts, needed to account for differences in fixed-point locations.

The Simulink Fixed Point software features listed above are all supported for fixed-point Simulink blocks. Other products in the Simulink family with fixed-point capabilities might support some or all of these features. To get specific information about the fixed-point features supported by a particular product, refer to the documentation for that product. For example,

• For information on fixed-point support in the Signal Processing Blockset software, refer to Working with Fixed-Point Data in the Signal Processing Blockset documentation.

• For information on fixed-point support in the Stateflow software, refer to Using Fixed-Point Data in Stateflow Charts in the Stateflow documentation.

Getting Started

What You Need to Get Started