Fixed Point Conversion Basics and Type Specification

Introduction to floating point to fixed point conversion, fixed-point runtime function support for HDL code generation

Learn about fixed-point conversion basics, the automated fixed-point conversion process, fixed-point function support for HDL code generation, and data type specification. For an overview on the fixed-point conversion process, see Automated Fixed-Point Conversion. To get started with an example, see Floating-Point to Fixed-Point Conversion.

Functions

`codegen`	Generate HDL or High-Level Synthesis (HLS) code from MATLAB code
`coder.config`	Create HDL Coder code generation configuration objects
`coder.approximation`	Create function replacement configuration object

Classes

coder.FixPtConfig Floating-point to fixed-point conversion configuration object

Topics

Automated Fixed-Point Conversion
Convert floating-point MATLAB^® code to fixed-point code.
Specify Type Proposal Options
Specify Properties of Entry-Point Function Inputs
Specify input types so that the code generator can determine the types of all variables.
Data Type Issues in Generated Code
Highlight potential data type issues in report.
Functions Supported for HDL and HLS Code Generation
Built-in MATLAB and toolbox functions supported for HDL and High-Level Synthesis (HLS) code generation.
Custom Plot Functions
Use a custom plotting function to visualize the differences between the floating-point and fixed-point results.
Edit Configuration Parameters for Fixed-Point Code Generation
Edit fixed-point configuration object parameters interactively.

Featured Examples

Working with Fixed-Point Code

HDL code generation from a fixed-point MATLAB® design that is ready for code generation.

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Floating-Point to Fixed-Point Conversion

Start with a floating-point design in MATLAB®, iteratively converge on an efficient fixed-point design in MATLAB, and verify the numerical accuracy of the generated fixed-point design.

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Generate HDL Code from MATLAB Code Using the Command Line Interface

Use the HDL Coder™ command line interface to generate HDL code from MATLAB® code, including floating-point to fixed-point conversion and FPGA programming file generation.

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Fixed-Point Type Conversion and Refinement

Achieve your desired numerical accuracy when converting fixed-point MATLAB® code to floating-point code using the HDL Workflow Advisor.

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Working with Generated Fixed-Point Files

Work with the files generated during floating-point to fixed-point conversion.

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Fixed-Point Type Conversion and Derived Ranges

Achieve your desired numerical accuracy when converting fixed-point MATLAB® code to floating-point code using static range analysis which helps to compute derived ranges of the variables from design ranges.

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