GNU g++  v5.2.1
GNU Standard C++
Namespace List
Here is a list of all namespaces with brief descriptions:
[detail level 12]
 N__gnu_cxx
 N__ops
 Ntypelist
 N__gnu_debugGNU debug classes for public use
 N__gnu_parallelGNU parallel code for public use
 N__gnu_pbdsGNU extensions for policy-based data structures for public use
 Ndetail
 N__gnu_profileGNU profile code for public use
 N__gnu_sequentialGNU sequential classes for public use
 Ndetail
 Njava
 Nawt
 NstdSTL namespace
 N__debugMacros and namespaces used by the implementation outside of debug wrappers to verify certain properties
 N__exception_ptr
 N__parallelGNU parallel code, replaces standard behavior with parallel behavior
 N__profileGNU profile code, replaces standard behavior with profile behavior
 Nregex_constants
 Nrel_ops
 Nsun
 Nawt