#define isdigit(d) ((d) >= '0' && (d) <= '9')
#define Ctod(c) ((c) - '0')
#define MAXBUF (sizeof(long long int) * 8) /* enough for binary */
static char digs[] = "0123456789abcdef";
#define isdigit(d) ((d) >= '0' && (d) <= '9')
#define Ctod(c) ((c) - '0')
#define MAXBUF (sizeof(long long int) * 8) /* enough for binary */
static char digs[] = "0123456789abcdef";