#include <stdlib.h>#include <string.h>#include "filter.h"int parse_filter_value(char *filter_string, struct ray_filter_t *rf){       int nb_filter=0;    float tab[3] = {.0, .0, .0};    char *p;    if (!filter_string) {	rf->residual_max = tab[0];        rf->delta_max    = tab[1];        rf->nb_event_min = (int)tab[2];	return (3);    }    p = strtok(filter_string, ",");    if (!p) {	    return(-1);    }        do {	tab[nb_filter] = atof(p);	nb_filter++;	if (nb_filter > 3)  {		return(-1);	}    } while ((p = strtok(NULL, ",")) != NULL);        rf->residual_max = tab[0];    rf->delta_max    = tab[1];    rf->nb_event_min = (int)tab[2];    return (nb_filter);}