Converting Models from Floating Point to Fixed Point for Production Code Generation

http://www.mathworks.com/company/newsletters/digest/2008/nov/converting-models.html

First submitted by Linda Webb on 29 Jun 2009

Description of tools and a workflow for converting models from floating point to fixed point

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Date	Contributor	Description	Rating
29 Jun 2009	Linda Webb	An essential step in embedded software development, floating- to fixed-point conversion can be tedious, labor-intensive, and error-prone. System engineers frequently design algorithms in floating-point math, usually double-precision. This format represents the ideal algorithm behavior but takes little account of the algorithm’s final realization in production software and hardware. Software engineers and suppliers in mass production environments often need to convert these algorithms to fixed-point math for their integer-only hardware. As a result, multiple iterations between system and software engineers are often required. Using a fault-tolerant fuel system model as an example, this article describes tools and a workflow for converting models from floating point to fixed point for production code generation. The approach described here uses two tools in Simulink Fixed Point™: Fixed-Point Advisor and Fixed-Point Tool. By Bill Chou and Tom Erkkinen, The MathWorks This article was published in MATLAB Digest, November 2008

29 Jun 2009

Linda Webb

An essential step in embedded software development, floating- to fixed-point conversion can be tedious, labor-intensive, and error-prone. System engineers frequently design algorithms in floating-point math, usually double-precision. This format represents the ideal algorithm behavior but takes little account of the algorithm’s final realization in production software and hardware. Software engineers and suppliers in mass production environments often need to convert these algorithms to fixed-point math for their integer-only hardware. As a result, multiple iterations between system and software engineers are often required.
Using a fault-tolerant fuel system model as an example, this article describes tools and a workflow for converting models from floating point to fixed point for production code generation. The approach described here uses two tools in Simulink Fixed Point™: Fixed-Point Advisor and Fixed-Point Tool.

By Bill Chou and Tom Erkkinen, The MathWorks

This article was published in MATLAB Digest, November 2008

Tag Activity

Tag	Applied By	Date/Time
modeling	Linda Webb	29 Jun 2009 at 4:28pm
verification	Linda Webb	29 Jun 2009 at 4:28pm
optimization	Linda Webb	29 Jun 2009 at 4:28pm
code generation production code	Linda Webb	29 Jun 2009 at 4:28pm
simulation	Linda Webb	29 Jun 2009 at 4:28pm
verification(2)	Linda Webb	29 Jun 2009 at 4:28pm
validation	Linda Webb	29 Jun 2009 at 4:28pm
processorintheloop	Linda Webb	29 Jun 2009 at 4:28pm
pil	Linda Webb	29 Jun 2009 at 4:28pm
floatingpoint	Linda Webb	29 Jun 2009 at 4:28pm
fixedpoint scaling	Linda Webb	29 Jun 2009 at 4:28pm
fixedpoint	Linda Webb	29 Jun 2009 at 4:28pm
fixed point tool	Linda Webb	29 Jun 2009 at 4:28pm
fixed point advisor	Linda Webb	29 Jun 2009 at 4:28pm

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