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damped_newton -- damped Newton nonlinear algorithm

damped_newton(4rheolef) rheolef-6.7 damped_newton(4rheolef)

NAME

damped_newton -- damped Newton nonlinear algorithm

DESCRIPTION

Nonlinear damped Newton algorithm for the resolution of the following problem:
 
       F(u) = 0
 
A simple call to the algorithm writes:
 
    my_problem P;
    field uh (Vh);
    damped_newton (P, uh, tol, max_iter);
 
In addition to the members required for the Newton algorithm (see newton(4)), the space_norm is required for the damped Newton line search algorithm:
 
    class my_problem {
    public:
      ...
      Float space_norm (const field& uh) const;
    };
 
 

IMPLEMENTATION

template <class Problem, class Field, class Real, class Size>
int damped_newton (Problem P, Field& u, Real& tol, Size& max_iter, odiststream* p_derr=0) {
  return damped_newton(P, newton_identity_preconditioner(), u, tol, max_iter, p_derr);
}
 
 

SEE ALSO

newton(4)
rheolef-6.7 rheolef-6.7