int coords(int rank, int maxdims, int coords[]) ;
int get(int maxdims, int* dims, int* periods, int* coords);
int rank(int* coords, int* rank);
int shift(int direction, int disp, int *rank_source, int *rank_dest) ;
int dim_get(int *ndims);
int coords(int rank, int maxdims, int coords[]) ;
int get(int maxdims, int* dims, int* periods, int* coords);
int rank(int* coords, int* rank);
int shift(int direction, int disp, int *rank_source, int *rank_dest) ;
int dim_get(int *ndims);