pub fn backend_warnings(
options: &OptionsList,
reg: &RegisteredOptions,
) -> Vec<String>Expand description
Warnings for backend knobs the caller set. Never blocks a solve, and
emits at most one line per backend family: an ipopt.opt tuned for
MA97 sets a dozen ma97_* knobs at once, and a dozen near-identical
lines would be noise the reader learns to skip.
Same default gate as everything else here — an ipopt.opt that
spells out ma97_u 1e-8 (the registered default) asks for nothing
and gets nothing said about it.