Name of C/C++ stdlib naming convention?

I wonder if the naming convention used in C/C++ standard libraries has a name, or at least a cheat-sheet where I can lookup the rules. E.g.

push_back    -- underscore used
setstate     -- but not used here!
string::npos -- when to use abbreviations?
fprintf
...

Does the naming convention used in the C/C++ standard libraries have a specific name?