Which C++ function corresponds to ST_MakeValid

[afabri]

Is there a page with a mapping for this and other functions?

[pramsey]

PostGIS accesses GEOS via the GEOS C-API, you can find all the exposures in the header file, https://libgeos.org/doxygen/geos__c_8h.html

[dr-jts]

You have to look at the PostGIS source to find out what GEOS C API backs the function. Then look at geos_ts_c.cpp to see what C++ code are used to implement the functionality.

For GEOSMakeValid the C++ interface is here.