0.8.0

What's Changed

CobylaSolver is now optional, gated behind the argmin feature. If you use it, change your Cargo.toml as follows:

cobyla = { version = "0.8", feature = ["argmin"] }

• Make argmin solver an optional feature by @relf in #22
• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #21

Full Changelog: 0.7.0...0.8.0

0.7.0

What's Changed

• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #19
• Update dependencies by @relf in #20

Full Changelog: 0.6.0...0.7.0

0.6.0

What's Changed

• Upgrade dependency argmin 0.10 by @relf in #17

Full Changelog: 0.5.1...0.6.0

0.5.1

• Fix default constraint tolerance (set to zero, was 2e-4)

0.5.0

• Remove fmin_cobyla implementation as nlopt_cobyla now renamed minimize based on NLopt implementation is more powerful
  Nevertheless Cobyla argmin solver is still based on the initial implementation (as was fmin_cobyla), not on NLopt one.
• Remove gradient from ObjFn trait which is now renamed Func
• minimize API rework to make it more Rusty.
• Not all options of NLopt version are managed. Currently cobyla::minimize handles xinit, bounds, max_eval, ftol_rel,
  ftol_abs, xtol_rel, xtol_abs and only inequality contraints (like c >= 0). See documentation for further details.

0.4.0

This version adds another Rust COBYLA implementation nlopt_cobyla. As for the former implementation fmin_cobyla, the code was transpiled from the NLopt 2.7.1 C code and edited manually to make it work inspired from Rust NLopt binding

At the moment the nlopt_cobyla prototype is modeled after the fmin_cobyla to ease the test and switch between the two implementations.
This is somehow going a bit backward as the NLopt implementation API is richer and contains improvements wrt the initial Powell's implementation (see NLopt COBYLA). Only bounds management is made available as additional tuple parameter (lower bound, upper bound).

What's Changed

• NLopt 2.7.1 cobyla oxydation by @relf in #12
• NLopt Cobyla consolidation by @relf in #13

Full Changelog: 0.3.3...0.4.0

0.3.3

• Fix erroneous iprint condition (#10, thanks to @Sven-MintTower)

0.3.0

COBYLA is now also implemented as an argmin::Solver and benefit from argmin framework tooling (#4).
See example.

0.2.0

From now on, cobyla is not a bindgen wrapping any more.
COBYLA C code has been transpiled to unsafe Rust using c2rust then manually edited to remove extern "C" usage.
There is no API change.