How do I add a preprocessor-command and avoid double-types when using simulink-coder

I've started working with simulink-coder (for creating c-code) and an existing project and I need some tips/ideas about the following problems:

• I've a bus defined in simulink, which gets translated in a struct in the c-code. I need a preprocessor command (#pragma pack(push, 1)) added to the definition of the struct automatically during translation.
• I'm using a 32bit processor, so I don't want to evaluate any double-calculations. What's the easiest way to avoid them? At first I thought I "just" change the "Hardware Implementation"-entries, but than I still can find a double-datatype in "rtwtypes.h".
• I want the coder to use sinf() instead of sin() for the same reasons.

Can you give me some hints about solving this problems?

Stephan Lanser

[Gianmarco Odorizzi]

I am also facing the same issue, did you manage to insert #pragma directives before and after the declaration of a struct in the header file?