src/lmfit/lm_eval.h


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typedef struct {
        double* user_t;
        double* user_y;
        double (*user_func)( double user_t_point, double* par );
} lm_data_type;

void lm_evaluate_default( double* par, int m_dat, double* fvec, 
                          void *data, int *info );

void lm_print_default( int n_par, double* par, int m_dat, double* fvec,
                       void *data, int iflag, int iter, int nfev );