Get Started withFixed-Point Designer

定点Designer™提供了用于优化和实现嵌入式硬件上的定点和浮点算法的数据类型和工具。它包括定点和浮点数据类型以及特定于目标的数字设置。使用定点设计器，您可以执行目标感知的模拟，这是固定点的位真实。然后，您可以在实施硬件设计之前测试和调试量化效果，例如溢出和精确损失。

Fixed-Point Designer provides apps and tools for analyzing double-precision algorithms and converting them to reduced-precision floating point or fixed point. Optimization tools enable you to select data types that meet your numerical accuracy requirements and target hardware constraints. For efficient implementation you can replace computationally expensive design constructs with hardware-optimal patterns such as compressed lookup tables.

Production C and HDL code can be generated directly from your fixed- and floating-point optimized models.

Tutorials

MATLAB工作流程

Create Fixed-Point Data in MATLAB

Fixed point basics.

Perform Fixed-Point Arithmetic

Performing fixed-point arithmetic.

View Fixed-Point Data

fiobject display settings used in code examples.

Accelerate Fixed-Point Simulation

This example shows how to accelerate fixed-point algorithms usingfiaccelfunction.

使用最小/最大仪表设置数据类型

This example shows how to set fixed-point data types by instrumenting MATLAB code for min/max logging and using the tools to propose data types.

Generate Fixed-Point C Code

Generate standalone fixed-point C code.

Manually Convert a Floating-Point MATLAB Algorithm to Fixed Point

Manual conversion of a floating-point MATLAB algorithm to fixed point.

Simulink Workflow

Developing and Testing Fixed-Point Systems

Overview of the development cycle for simulating dynamic systems.

Pass Fixed-Point Data Between Simulink Models and MATLAB

Reading fixed-point data from MATLAB^®into your Simulink^®models, and logging fixed-point information from your models and simulations to the workspace.

Configure Blocks with Fixed-Point Output

Fixed-point model creation by configuring Simulink blocks to output fixed-point signals.

从双打到固定点

Example based on thefxpdemo_dbl2fixmodel, which highlights many of the key features of the Fixed-Point Designer software.

Convert Floating-Point Model to Fixed Point

使用固定点工具将浮点模型转换为固定点。

Sharing Fixed-Point Models

Data type override settings for sharing and editing a model containing fixed-point blocks without the Fixed-Point Designer software.

关于固定点

• Benefits of Fixed-Point Hardware
  

  Fixed-point hardware can provide benefits in size and power consumption, memory usage, speed, and cost.

• 定点数据类型
  

  Fixed-point data types representation.

• Precision and Range
  

  Discusses the concepts behind arithmetic operations in Fixed-Point Designer.

• Scaling
  

  讨论定点设计师中使用的缩放类型。仅二进制点和[斜率偏置]。

• Arithmetic Operations
  

  Introduces the concepts behind arithmetic operations in Fixed-Point Designer.

• Physical Quantities and Measurement Scales
  

  Overview of measurement scales and representing numbers.

• Selected Bibliography