The symbol I'm after is ⟳ (also nice to have ⟲). That's U+27F3
(and U+27F2
). Detexify can't find it (or my drawing skills are woeful); is it already in a font package, or do I have to load it from STIX?
A more general question would be: if I already know the unicode symbol, how do I find out which package supports it?