valarray - C++ Reference
http://www.cplusplus.com/reference/valarray/valarray/<numeric> - C++ Reference
http://www.cplusplus.com/reference/numeric/std::async - cppreference.com
http://fr.cppreference.com/w/cpp/thread/asyncAtomic operations library - cppreference.com
http://fr.cppreference.com/w/cpp/atomicContainers decision graphs