Provided by: libjudy-dev_1.0.5-1ubuntu1_amd64 bug


       Judy1  functions - C library for creating and accessing a dynamic array of bits, using any
       value of a word as an index


       int    Judy1Set(       PPvoid_t PPJ1Array, Word_t   Index,  PJError_t PJError);
       int    Judy1Unset(     PPvoid_t PPJ1Array, Word_t   Index,  PJError_t PJError);
       int    Judy1Test(      Pcvoid_t  PJ1Array, Word_t   Index,  PJError_t PJError);
       Word_t Judy1Count(     Pcvoid_t  PJ1Array, Word_t   Index1, Word_t    Index2, PJError_t PJError);
       int    Judy1ByCount(   Pcvoid_t  PJ1Array, Word_t   Nth,    Word_t * PIndex,  PJError_t PJError);
       Word_t Judy1FreeArray( PPvoid_t PPJ1Array, PJError_t PJError);
       Word_t Judy1MemUsed(   Pcvoid_t  PJ1Array);
       int    Judy1First(     Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1Next(      Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1Last(      Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1Prev(      Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1FirstEmpty(Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1NextEmpty( Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1LastEmpty( Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);
       int    Judy1PrevEmpty( Pcvoid_t  PJ1Array, Word_t * PIndex, PJError_t PJError);


       A macro equivalent exists for each function call.  Because the macro forms  are  sometimes
       faster and have a simpler error handling interface than the equivalent functions, they are
       the preferred way of calling the Judy1 functions.  See Judy1(3) for more information.  The
       function call definitions are included here for completeness.

       One  of  the difficulties in using the Judy1 function calls lies in determining whether to
       pass a pointer or the address of a pointer.  Since the functions  that  modify  the  Judy1
       array  must  also  modify the pointer to the Judy1 array, you must pass the address of the
       pointer rather than the pointer itself.  This often leads  to  hard-to-debug  programmatic
       errors.   In  practice,  the  macros  allow  the compiler to catch programming errors when
       pointers instead of addresses of pointers are passed.

       The Judy1 function calls have an additional parameter beyond those specified in the  macro
       calls.   This  parameter is either a pointer to an error structure, or NULL (in which case
       the detailed error information is not returned).

       In the following descriptions, the functions are described in terms of how the macros  use
       them  (only  in the case of #define JUDYERROR_NOTEST 1).  This is the suggested use of the
       macros after your program has been fully debugged.  When the JUDYERROR_NOTEST macro is not
       specified,  an  error  structure  is declared to store error information returned from the
       Judy1 functions when an error occurs.

       Notice the placement of the & in the different functions.

        Judy1Set(&PJ1Array, Index, &JError)

                      #define J1S(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1Set(&PJ1Array, Index, PJE0)

        Judy1Unset(&PJ1Array, Index, &JError)

                      #define J1U(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1Unset(&PJ1Array, Index, PJE0)

        Judy1Test(PJ1Array, Index, &JError)

                      #define J1T(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1Test(PJ1Array, Index, PJE0)

        Judy1Count(PJ1Array, Index1, Index2, &JError)

                      #define J1C(Rc_word, PJ1Array, Index1, Index2) \
                         Rc_word = Judy1Count(PJ1Array, Index1, Index2, PJE0)

                      A return value of 0 can be an error, valid as a count, or it can indicate a
                      special  case  for  a  fully-populated  array  (32-bit  machines only).  If
                      necessary, the following code can be used to disambiguate this return:

                      JError_t JError;

                      Rc_word = Judy1Count(PJ1Array, Index1, Index2, &JError);
                      if (Rc_word == 0)
                          if (JU_ERRNO(&JError) == JU_ERRNO_NONE)
                              printf("Judy1 array population == 0\n");
                          if (JU_ERRNO(&JError) == JU_ERRNO_FULL)
                              printf("Judy1 array population == 2^32\n");
                          if (JU_ERRNO(&JError) == JU_ERRNO_NULLPPARRAY)
                              goto NullArray;
                          if (JU_ERRNO(&JError) >  JU_ERRNO_NFMAX)
                              goto Null_or_CorruptArray;

        Judy1ByCount(PJ1Array, Nth, &Index, &JError)

                      #define J1BC(Rc_int, PJ1Array, Nth, Index) \
                         Rc_int = Judy1ByCount(PJ1Array, Nth, &Index, PJE0)

        Judy1FreeArray(&PJ1Array, &JError)

                      #define J1FA(Rc_word, PJ1Array) \
                         Rc_word = Judy1FreeArray(&PJ1Array, PJE0)


                      #define J1MU(Rc_word, PJ1Array) \
                         Rc_word = Judy1MemUsed(PJ1Array)

        Judy1First(PJ1Array, &Index, &JError)

                      #define J1F(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1First(PJ1Array, &Index, PJE0)

        Judy1Next(PJ1Array, &Index, &JError)

                      #define J1N(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1Next(PJ1Array, &Index, PJE0)

        Judy1Last(PJ1Array, &Index, &JError)

                      #define J1L(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1Last(PJ1Array, &Index, PJE0)

        Judy1Prev(PJ1Array, &Index, &JError)

                      #define J1P(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1Prev(PJ1Array, &Index, PJE0)

        Judy1FirstEmpty(PJ1Array, &Index, &JError)

                      #define J1FE(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1FirstEmpty(PJ1Array, &Index, PJE0)

        Judy1NextEmpty(PJ1Array, &Index, &JError)

                      #define J1NE(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1NextEmpty(PJ1Array, &Index, PJE0)

        Judy1LastEmpty(PJ1Array, &Index, &JError)

                      #define J1LE(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1LastEmpty(PJ1Array, &Index, PJE0)

        Judy1PrevEmpty(PJ1Array, &Index, &JError)

                      #define J1PE(Rc_int, PJ1Array, Index) \
                         Rc_int = Judy1PrevEmpty(PJ1Array, &Index, PJE0)

       Definitions for all of the Judy functions, the types Pvoid_t, Pcvoid_t, PPvoid_t,  Word_t,
       JError_t,  and  PJError_t, the constants NULL, JU_ERRNO_*, JERR, and PJE0, are provided in
       the Judy.h header file (/usr/include/Judy.h).  Note:  Callers should define  Judy1  arrays
       as  type  Pvoid_t,  which can be passed by value to functions that take Pcvoid_t (constant
       Pvoid_t), and also by address to functions that take PPvoid_t.


       Judy was invented by Doug Baskins and implemented by Hewlett-Packard.


       Judy(3), JudyL(3), JudySL(3), JudyHS(3),
       the Judy website,, for more information and Application Notes.