text: /* $Id: bit.h 6 2007-01-22 00:45:22Z drhanson $ */
  #ifndef BIT_INCLUDED
  #define BIT_INCLUDED
  #define T Bit_T
  typedef struct T *T;
  extern T   Bit_new   (int length);
  extern int Bit_length(T set);
  extern int Bit_count (T set);
  extern void Bit_free(T *set);
  extern int Bit_get(T set, int n);
  extern int Bit_put(T set, int n, int bit);
  extern void Bit_clear(T set, int lo, int hi);
  extern void Bit_set  (T set, int lo, int hi);
  extern void Bit_not  (T set, int lo, int hi);
  extern int Bit_lt (T s, T t);
  extern int Bit_eq (T s, T t);
  extern int Bit_leq(T s, T t);
  extern void Bit_map(T set,
   	void apply(int n, int bit, void *cl), void *cl);
  extern T Bit_union(T s, T t);
  extern T Bit_inter(T s, T t);
  extern T Bit_minus(T s, T t);
  extern T Bit_diff (T s, T t);
  #undef T
  #endif
  