C99 numeric and TR1

[Paolo Carlini]

Mateusz Loskot wrote:
> I use GCC 4.0.3 and I have TR1 library but as I see there are no
> numeric functions.
>   
We will deliver those specific tr1 bits only with gcc4.2.0, you cannot 
possibly have them in 4.0.x. In 4.2.0 you will find those functions in 
namespace std::tr1, by including <tr1/cmath>. You can track the status 
of our tr1 implementation in:

    http://gcc.gnu.org/onlinedocs/libstdc++/ext/tr1.html

The latter is about mainline, would be 4.2.0.
> May be my understanding is incorrect but I'm trying to guess why
> GCC/libstdc++ polutes std namespaces with functions like isfinite(),
> as an extension, instead of putting it into std::tr1, the namespace
> already available in GCC 4.x. Any comments?
>   
I was hoping the issue was settled ;) Anyway... Please do not confuse 
tr1, which is indeed a technical report, not normative, a step toward 
the next C++ standard, with any released standard. As you know well by 
now, the next standard will include the facilities at issue in namespace 
std. In fact, we are already delivering those facilities in std, and, 
per a recently discussed policy (just search the archives), we consider 
that appropriate because the facilities are already in the draft of C++0x.

Paolo.