G++ and ISO C++ conformity?

[christoph.loewe@gameplay.de]

Hi,

I have recently downloaded the latest Cygwin archive
to start a project in C++. I have read Bjarne Stroustrup's
"The C++ Programming Language" (Special Ed.) and was surprised
to find several includes and functions missing in the g++
distribution.

Header files that could not be found:
     <limits>   e.g. numeric_limits<int>::max();
        <sstream>  e.g. ostringstream ost;

Furthermore the "range controlled" indexing via at()
would not work.

Can it be that G++ does not completely support ISO C++?
Or did I forget to install something?
Is an update planned, if indeed some features of ISO C++
are indeed missing in g++?

I used the Setup.exe and did a complete Install via
Internet.

Thanks for your time...

Regards,
     AEon