Investigate premature xtol termination in trust_solve.m
Commit aa8439d4 introduced the additional termination criterion
% Tests for termination and stringent tolerances.
if max(.1*delta, pnorm)<=10*eps(xnorm)*xnorm
% xtol is too small. no further improvement in
% the approximate solution x is possible.
info = 5;
x(:) = inf;
errorflag = true;
continue
end
This causes steady-state finding to fail in master where it worked in 5.x
. An example is the attache file.