Sebastien Binet

just a drive-by comment: could you run the benchmarks before/after the proposed optimization a couple of times (say 10-20) and show the result of `benchstat`? with the limited statistics you...

what `gonum` could perhaps have is a code generator (based off `go/types`) to write the derivative code from a given `func F(x float64) float64`...

Yes, Please! :)

Nice!

this would need a "champion" to spearhead that work. as for the proper home for that LM curve fitting procedure, there are (I think) 3 ways to paint that shed:...

I obviously did forget about that one :)

the good old `MINUIT` minimization program from CERN uses the following formula to handle parameters with limits: - https://cds.cern.ch/record/2296388/files/minuit.pdf (page 2) ``` P_internal = arcsin (2 * (P_external - a)...

it's `graph` reaching into the guts of the builtin `map` and making assumption about its representation (IIRC). this was working with Go

that's probably in @btracey 's area of expertise.

to better understand your issue, what is exactly the problem at hand? - is it the size of the underlying `git clone` to get a couple of Go files under...