| Fixed-Point Blockset |
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- What Is the Fixed-Point Blockset?
- Exploring the Blockset
- How to Get Online Help
- System Requirements
- Licensing Information
- Related Products
- Using This Guide
- Expected Background
- If You Are a New User
- If You Are an Experienced User
- How This Book Is Organized
- Installation
- Typographical Conventions
- Overview
- Physical Quantities and Measurement Scales
- Selecting a Measurement Scale
- Example: Selecting a Measurement Scale
- Why Use Fixed-Point Hardware?
- Why Use the Fixed-Point Blockset?
- The Development Cycle
- Compatibility with Simulink Blocks
- Unified Simulink and Fixed-Point Blockset Blocks
- Frame-Based Signals
- Matrix Signals
- Overview of Blockset Features
- Configuring Fixed-Point Blocks
- Additional Features and Capabilities
- Example: Converting from Doubles to Fixed-Point
- Block Descriptions
- Simulation Results
- Demos
- Basic Fixed-Point Blockset Demos
- Advanced Fixed-Point Blockset Demos
- Overview
- Fixed-Point Numbers
- Signed Fixed-Point Numbers
- Radix Point Interpretation
- Scaling
- Quantization
- Range and Precision
- Example: Fixed-Point Scaling
- Example: Constant Scaling for Best Precision
- Floating-Point Numbers
- Scientific Notation
- The IEEE Format
- Range and Precision
- Exceptional Arithmetic
- Overview
- Limitations on Precision
- Rounding
- Padding with Trailing Zeros
- Example: Limitations on Precision and Errors
- Example: Maximizing Precision
- Limitations on Range
- Saturation and Wrapping
- Guard Bits
- Example: Limitations on Range
- Recommendations for Arithmetic and Scaling
- Addition
- Accumulation
- Multiplication
- Gain
- Division
- Summary
- Parameter and Signal Conversions
- Parameter Conversions
- Signal Conversions
- Rules for Arithmetic Operations
- Computational Units
- Addition and Subtraction
- Multiplication
- Division
- Shifts
- Example: Conversions and Arithmetic Operations
- Overview
- Realizations and Data Types
- Targeting an Embedded Processor
- Size Assumptions
- Operation Assumptions
- Design Rules
- Canonical Forms
- Direct Form II
- Series Cascade Form
- Parallel Form
- Overview
- Simulink Model of a Feedback Design
- Simulation Setup
- Idealized Feedback Design
- Digital Controller Realization
- Direct Form Realization
- Simulation Results
- 1. Initial Guess at Scaling
- 2. Data Type Override
- 3. Automatic Scaling
- Overview
- Worst Case Error for a Lookup Table
- Example: Square Root Function
- Creating Lookup Tables for a Sine Function
- Parameters for fixpt_look1_func_approx
- Setting Function Parameters for the Lookup Table
- Example 1: Using errmax with Unrestricted Spacing
- Example 2: Using nptsmax with Unrestricted Spacing
- Example 3: Using errmax with Even Spacing
- Example 4: Using nptsmax with Even Spacing
- Example 5: Using errmax with Power of Two Spacing
- Example 6: Using nptsmax with Power of Two Spacing
- Specifying Both errmax and nptsmax
- Comparing the Examples
- Summary: Using the Lookup Table Functions
- Effect of Spacing on Speed, Error, and Memory Usage
- Data ROM Required
- Determining Out-of-Range Inputs
- Determining Input Location
- Interpolation
- Conclusion
- Functions--By Category
- Conversions
- Fixed-Point Settings Interface
- Global Changes
- Lookup Tables
- Data Type Structures
- Tools
- Functions--Alphabetical List
- Blocks--By Category
- Bits
- Calculus
- Data Type
- Delays & Holds
- Edge Detect
- Filters
- Logic & Comparison
- LookUp
- Math
- Nonlinear
- Select
- Sources
- Overview of the Block Reference Pages
- The Block Dialog Box
- Common Block Features
- Block Parameters
- Block Icon Labels
- Port Data Type Display
- Blocks--Alphabetical List
- Overview
- Code Generation Support
- Languages
- Storage Class of Variables
- Storage Class of Parameters
- Rounding Modes
- Overflow Handling
- Blocks
- Scaling
- Generating Pure Integer Code
- Example: Generating Pure Integer Code
- HTML Report
- Using the Simulink Accelerator
- Using External Mode or rsim Target
- External Mode
- Rapid Simulation Target
- Customizing Generated Code
- Macros Versus Functions
- Bit Sizes for Target C Compiler
| | Preface | |