CreateNewtonRaphsonSolverParameters.cpp

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#include "CreateNewtonRaphsonSolverParameters.h"
 
#include "BaseLib/ConfigTree.h"
#include "NewtonRaphson.h"
 
namespace NumLib
{
NewtonRaphsonSolverParameters createNewtonRaphsonSolverParameters(
    BaseLib::ConfigTree const& config)
{
    DBUG("Create local nonlinear solver parameters.");
    auto const maximum_iterations =
        config.getConfigParameter<int>("maximum_iterations");
 
    DBUG("\tmaximum_iterations: {:d}.", maximum_iterations);
 
    auto const error_tolerance =
        config.getConfigParameterOptional<double>("error_tolerance");
    if (error_tolerance)
    {
        WARN(
            "The 'error_tolerance' tag for the Newton-Raphson solver is "
            "deprecated.\n"
            "Use new tags 'residuum_tolerance' and 'increment_tolerance'.\n"
            "For now we use residuum_tolerance {} and increment_tolerance 0.",
            *error_tolerance);
        return {maximum_iterations, *error_tolerance, 0};
    }
 
    auto const residuum_tolerance =
        config.getConfigParameter<double>("residuum_tolerance");
 
    DBUG("\tresiduum_tolerance: {:g}.", residuum_tolerance);
 
    auto const increment_tolerance =
        config.getConfigParameter<double>("increment_tolerance");
 
    DBUG("\tincrement_tolerance: {:g}.", increment_tolerance);
 
    return {maximum_iterations, residuum_tolerance, increment_tolerance};
}
}  // namespace NumLib