Math lib

[eriksl]

But that way the data ends up in dram after all (not all at the same though, that's true).

[dkinzer]

That's true but it is only temporary. Other helper routines can be written to return values of different sizes from Flash-based tables. Which to use depends on your needs.

[eriksl]

My ideal solution would be an exception handler that does this transparently. Apparently an exception is thrown, so it might be possible. As said, nodemcu seems to do something like that, but I can't find the code to emulate the read in software. Some (many?) people won't like this approach because it makes timing undetermined But I don't mind.