Re: SC_IS_PRERELEASE and TLM_IS_PRERELEASE

John, all,

I've checked this again. TRUE and FALSE are neither part of the C nor
the C++ standard.

  They are defined by some platforms (e.g. on Windows), and also
commonly defined in C applications, but the latter mostly due to the
lack of proper bool support.

  Wrt. to backwards compatibility, I highly doubt that there are
frequent uses of this, since the current TLM-2 kit is just broken in
that regard. Try the following on a non-Windows platform:

// ---8<---
#include <systemc>
#include <tlm.h>

int sc_main( int, char*[] )
{
# if TLM_IS_PRERELEASE == TRUE
    std::cout << "TLM pre-release" << std::endl;
# endif

# if TLM_IS_PRERELEASE == FALSE
    std::cout << "TLM not a pre-release" << std::endl;
# endif
  return 0;
}
// --->8---

  This prints, _both_ lines on my default Linux/GCC 4.4 platform, since
TRUE and FALSE are undefined. And comparing two undefined symbols is
quite … undefined. ;-)

Greetings from Oldenburg,
  Philipp

On 11/01/11 13:37, john.aynsley@doulos.com wrote:
> All,
>
> Philipp writes:
>
>
> 9.6.5 SystemC Version
> 11.8.1 TLM version information
>
> SC_IS_PRERELEASE
> TLM_IS_PRERELEASE
>
> "... flag shall be either FALSE or TRUE, not enclosed in quotation
> marks."
>
> Hmmm, maybe 'true' or 'false' (lower-case) would be more portable?
> Or even an application-defined integral constant expression evaluating
> to 0/1 (or false/true).
>
>
> [JA] I guess FALSE and TRUE are still required for backward compatibility
> in the TLM-2.0 world?
>
> Opinions?
>
> John A
>
>
>

-- 
Philipp A. Hartmann
Hardware/Software Design Methodology Group
OFFIS Institute for Information Technology
R&D Division Transportation · FuE-Bereich Verkehr
Escherweg 2 · 26121 Oldenburg · Germany · http://offis.de/en/
Phone/Fax: +49-441-9722-420/282 · PGP: 0x9161A5C0 · Skype: phi.har
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