split
split(char *string, char *fields[], int nfields, char *sep)
split(bktr_reg_t *bktr, u_int **dma_prog, int width, u_int operation,
Cell *split(Node **a, int nnn) /* split(a[0], a[1], a[2]); a[3] is type */
split(const char *name, size_t nlen, char *base, size_t bsize, int *aunit)