Analyzing and creating fixed-point data types.

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Torsten Knodt 2013-2-11

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https://ww2.mathworks.cn/matlabcentral/answers/63094-analyzing-and-creating-fixed-point-data-types

Hello, is there a single function to get the minimum and maximum value representable by a specific fixed-point data type? I am aware that I can calculate it but wondering if there is really no function for it. My second question is the same thing around. Is there a function to create a fixed-point data type based on minimum, maximum and scaling, which does not need a word length or the like before? Again I am aware that I can calculate it but would prefer a ready to use function if available.

Thanks in Advance Torsten Knodt

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Answer 1

Kaustubha Govind 2013-2-12

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https://ww2.mathworks.cn/matlabcentral/answers/63094-analyzing-and-creating-fixed-point-data-types#answer_74766

I don't have a lot of experience with this, but I believe this should be possible in Simulink using the Fixed-Point Tool.

In MATLAB, it looks like you need the LOWERBOUND and UPPERBOUND functions to find the min/max for a fixed-point type. Not sure how you can do the converse, but it might be worth looking at the Fixed-Point Functions reference to see if you can find anything useful.