File and line number or macro layer in care/util.h?

Some of the functions in care/util.h take a file and line number so if there is a GPU API error code returned, we can print out the file and line number of the calling location. Should all the functions take a file and line number? Do we want to provide a macro layer that injects the file and line number for users? Do we want to wait until c++ 20 when source_location becomes a thing (https://en.cppreference.com/w/cpp/utility/source_location)?

Start by reading care/util.h and inventory which functions currently accept file and line information. Resolve whether the API should standardize those parameters, add a macro layer, or wait for C++20 source_location; done means documenting and implementing a settled direction, with validation for the affected GPU error-reporting paths.

Written by the indexing model from the issue text.