
#include "expression.h"

extern func_t f_col;
extern func_t f_row;
extern func_t f_depth;
extern func_t f_nrows;
extern func_t f_ncols;
extern func_t f_ndepths;

extern func_t f_x;
extern func_t f_y;
extern func_t f_z;
extern func_t f_ewres;
extern func_t f_nsres;
extern func_t f_tbres;

extern func_t f_area;
