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

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.

Answer 1

[Harsh Saxena]

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!