# libstdc++ source Namespace List

Here is a list of all documented namespaces with brief descriptions:

__gnu_cxx | GNU extensions for public use
__gnu_cxx::balloc | Related to __gnu_cxx::bitmap_allocator
__gnu_debug | GNU debug mode implemenation details
__gnu_internal | GNU implemenation details, not for public use
abi | The cross-vendor C++ Application Binary Interface
std | Everything defined by the ISO C++ Standard is within namespace std
std::rel_ops | The generated relational operators are sequestered here
std::tr1 | Everything defined by the TR1 is within namespace std::tr1