Mex Error: undeclared identifier What does this mean?
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Prompt please. I want to make mex from csfunc.c, but the compiler gives out errors, why?
>>mex csfunc.c
Error csfunc.c: 71 undeclared identifier `USE_DEFAULT_SIM_STATE'
Warning csfunc.c: 71 possible usage of USE_DEFAULT_SIM_STATE before definition
Etc. still it is a lot of errors
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Yucel
2011-2-23
Do you have 64-bit operating system? In that case it's have some problems all the time.
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Martijn
2011-2-23
USE_DEFAULT_SIM_STATE is defined in simstruc.h so it sounds like you may be missing the following include in your C code:
#include "simstruc.h"
Usually it is best to base your C S-functions on one of the templates like simulink\src\sfuntmpl_basic.c which already has this include line.
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