fixedpoint library linking issue with slbuild
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I have a model with S-function which uses ssRegisterDataTypeFxpBinaryPoint for uint64, but I am getting error when try to create an executable with slbuild for my model.
It looks like linking error, how to link fixedpoint library when I create an executable of my model with slbuild.
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Sivsankar
2025-3-6
To compile a fixed-point S-function, additional steps must be used compared to standard C-MEX S-functions.
- In your S-function, include "fixedpoint.c" and "fixedpoint.h". For more information, see: https://www.mathworks.com/help/fixedpoint/ug/structure-of-the-s-function.html
- Pass an extra argument, "-lfixedpoint", to the MEX command. For example:
>> mex('sfun_user_fxp_asr.c','-lfixedpoint')
Including this extra argument should help in resolving any linker errors you may encounter.
You can leverage the following documentation to larn how to create MEX functions : https://www.mathworks.com/help/fixedpoint/ug/creating-mex-files.html
2 个评论
Ruchit
2025-3-6
Sivsankar
2025-3-7
You will need to provide TLC code for the fixed pont S-Function when using 'slbuild' as Andy had mentioned in the comment: 'Hence a call to ssRegisterDataTypeFxpBinaryPoint in the standalong executable code just won't work. For generation of standalone code, you'll need to provide TLC code for the fixed-point s-function' of the following MATLAB answer,
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