sc_fxcast_switch in class

[samng]

I am trying to implement float and fixed and point computation using the same code using sc_fixed<> and type casting sc_fxcast_switch().

 

For this, I created a class template and added the type casting code:

 

 

template <sc_switch FIXPT> class abc {

  sc_fxcast_switch  fxc(FIXPT);

  sc_fxcast_context fxc_context(fxc);

 

  // members

  sc_fixed<....> a, b, c;

 

  .....

}

 

However, the compiler does not seem to like having the type casting code in class declaration, error in VS2010:

 

error C2061: syntax error : identifier 'fxc'

 

 

Can sc_fxcast_context/switch be members of a class? If not, how do you control the cast switch sc_fixed<> members?

 

 

Thanks,

Sam

[dakupoto]

Hello,

It appears that you are using MS Visual C++. Please note that MS

Visual C++ has a number of restricted prefixes that cannot be used.

You would have to check the compiler manual for these.

 

[apfitch]

If you're using the ASI Proof of Concept simulator, have you defined the define that enables fixed point, SC_INCLUDE_FX ?

 

Alan

 

P.S. And of course you can't initialize at declaration in a class!

Edited July 6, 2013 by apfitch

[samng]

Alan,

 

I did define SC_INCLUDE_FX and sc_fixed type is working fine.

 

Dakupoto,

 

The context switch code if put in functions/methods works fine. It seems that it just don't like it in class declaration.

 

Sam

[Philipp A Hartmann]

As Alan said, you can't initialize a class member within the body of the class definition in C++ (not SystemC specific).  You need to write a constructor instead.  Something like:

 

template <sc_switch FIXPT>
class abc
{
  sc_fxcast_switch  fxc;
  sc_fxcast_context fxc_context;


  // members
  sc_fixed<....> a, b, c;

public:
  // default constructor
  abc()
    : fxc(FIXPT)
    , fxc_context(fxc)
  {}

// ...
};
 

Greetings from Oldenburg,

  Philipp