Here is a list of all documented namespace functions with links to the namespaces they belong to:

### - r -

- random_sample() : __gnu_cxx
- random_sample_n() : __gnu_cxx
- random_shuffle() : std
- rbegin() : std
- reduce() : std
- regex_match() : std
- regex_replace() : std
- regex_search() : std
- remove() : std
- remove_copy() : std
- remove_copy_if() : std
- remove_if() : std
- rend() : std
- replace() : std
- replace_copy() : std
- replace_copy_if() : std
- replace_if() : std
- resetiosflags() : std
- rethrow_exception() : std
- rethrow_if_nested() : std
- return_temporary_buffer() : std
- reverse() : std
- reverse_copy() : std
- riemann_zeta() : std, std::tr1
- riemann_zetaf() : std
- riemann_zetal() : std
- right() : std
- rotate() : std
- rotate_copy() : std
- round() : std::chrono