Rosenbrock: broyden:
start point:         2         -2 
nsteps=776 ncalls=7690
root=         1          1 
f(root)=  4.21e-08  -2.15e-08 
eps            = 1E-07
f(root).norm() = 4.72519306926323E-08
test passed

Rosenbrock: newton:
start point:         2         -2 
nsteps=680 ncalls=7835
root=         1          1 
f(root)=  2.62e-09  -1.27e-09 
eps            = 1E-07
f(root).norm() = 2.91547486353226E-09
test passed