mom_eval_df mom_eval_f mom_eval_fdf user_post_process user_source

int mom_eval_fdf ( const gsl_vector *  x, void *  params, gsl_vector *  f, gsl_matrix *  J  ) Function that evaluates the function and its gradient in Newton's method. Parameters: x : vquad pts/wts ector on which function is defined params : Void pointer passing parameters to compute moments f : Vector containing functional evaluation during Newton's method J : Jacobian matrix for Newton's method Used for the Newton's method of solving system of non-linear equations to get quadrature points and weights. Both function and gradient computed at once to save time.