Creating Data Type Alias in the Generated Code, what is "creal32_T "

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Jake Gareau
Jake Gareau 2023-7-7
回答： Harsh Saxena 2023-7-10
why does generating code with embedded coder produce two typedef for the data type in question?
for example:
#ifndef RTW_HEADER_myHdrFile_h_
#define RTW_HEADER_myHdrFile_h_
#include "rtwtypes.h"
typedef real32_T mySingleAlias;
typedef creal32_T cmySingleAlias;
#endif /* RTW_HEADER_myHdrFile_h_ */
/*
I took this from: Manage replacement of simulink data types in generated code
I dont understand what creal32_T is? its not used in the code and just produces an error when I try to build it in my external project.

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采纳的回答

Harsh Saxena
Harsh Saxena 2023-7-10
Hi Jake,
The typedef creal32_T is used to handle the complex values in the generated code. Thus, creal32_T will be a structure with real and imaginary part. If you look into the 'rtwtypes.h' file, you will find the it's declaration like:
typedef struct {
real32_T re;/* Real component*/
real32_T im;/* Imaginary component*/
} creal32_T;
Embedded coder will automatically generate the cmySingleAlias object to deal with the complex data types.
Hope this helps!

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