Hi Jason Thanks for providing a great reference: Numerical Recipes! I have followed your suggestion and filed https://github.com/gonum/exp/pull/65 accordingly.
On Wednesday, 5 March 2025 at 05:49:44 UTC+8 Jason E. Aten wrote: > I can't speak to canon (the intersection of Gophers and numerical people > is > already the intersection of two small niches...so there's not a whole > lotta canon), > but Brent's method is standard stuff straight out of Numerical Recipes, > Section 9.3, page 352 > > https://s3.amazonaws.com/nrbook.com/book_F210.html > > ( I see this is cited by the cpmech/gosl library you referenced.) Anyway > -- it's a very > short method and you can probably have an LLM give you Go implementation > or port in 20 seconds. > Ask your LLM to write you some tests too and you should be good to go in > another > couple of minutes. > > On Tuesday, March 4, 2025 at 3:11:06 PM UTC awaw...@gmail.com wrote: > >> Hi Fellow Gophers >> >> I wonder what is the canonical Go library for finding roots of >> single-valued real functions? >> >> In particular, I am finding an implementation of Brent's method >> <https://en.wikipedia.org/wiki/Brent's_method>. >> Brent's method is the default algorithm in R, Matlab, and Scipy >> <https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.root_scalar.html#scipy.optimize.root_scalar> >> . >> >> Gonum has a pretty comprehensive list of facilities for optimization >> <https://pkg.go.dev/gonum.org/v1/gonum@v0.15.1/optimize>, but I couldn't >> find one that does simple root finding. >> There seem to be two packages out there that implement Brent's method, >> but they are of dubious provenance: >> * https://pkg.go.dev/github.com/cpmech/gosl/num#Brent . Relies on the >> derivative of f, f'(x), which shouldn't be the case for Brent's method. >> Plus, it pulls in a deluge of dependencies, and is not in pure Go. >> * https://pkg.go.dev/go.skia.org/infra/pinpoint/go/compare/stats . The >> zeroin function is not even exported, so presumably of unknown quality. >> > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/golang-nuts/a64a12e7-3e2c-4f28-a99c-4dc946e16d9dn%40googlegroups.com.
