All of these documents (in fact, this entire homepage set) are
bundled with the library source, under the docs subdirectory,
for releases and snapshots. The sole exception is the
automatically-generated source documentation, available separately.
In addition to the distribution documentation (these pages), we also
have a set of HTML documents generated from the sources themselves,
using the Doxygen tool. These are useful for examining the signatures
of public member functions for the library classes, etc.
The latest collection is for the GCC 3.0 release,
The collection is also available in the libstdc++ snapshots directory at
<URL:ftp://gcc.gnu.org/pub/gcc/libstdc++/>. You will
almost certainly need to use one of the
mirror sites to download
the tarball. After unpacking, simply load
in a browser. Feedback (and additional documentation!) is welcome.