#define LRS_MULTIP 1000 /* number of offset units in mp unit, later make it optional */

/* Structures, definitions and prototypes for  Linear reference system */
int LR_get_offset( dbDriver *driver, char *table_name,
                   char *lcat_col, char *lid_col,
                   char *start_map_col, char *end_map_col,
                   char *start_mp_col, char *start_off_col,
                   char *end_mp_col, char *end_off_col,
                   int lid, double mpost, double offset,
		   double multiplier,
                   int *line_cat, double *map_offset );

int LR_get_nearest_offset( dbDriver *driver, char *table_name,
                   char *lcat_col, char *lid_col,
                   char *start_map_col, char *end_map_col,
                   char *start_mp_col, char *start_off_col,
                   char *end_mp_col, char *end_off_col,
                   int lid, double mpost, double offset,
		   double multiplier, int direction,
                   int *line_cat, double *map_offset );

int LR_get_milepost( dbDriver *driver, char *table_name,
                   char *lcat_col, char *lid_col,
                   char *start_map_col, char *end_map_col,
                   char *start_mp_col, char *start_off_col,
                   char *end_mp_col, char *end_off_col,
                   int line_cat, double map_offset,
		   double multiplier,
                   int *lid, double *mpost, double *offset);

int LR_cmp_mileposts ( double mp1, double off1, double mp2, double off2 ) ;