INDEP - MEM_#?
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   NAME

      mem_pjw64hash() - Allows to hash data in the memory.



   SYNOPSIS

      hash = mem_pjw64hash(vuq, memptr, memlen);

      ULONG mem_pjw64hash(VUQUAD *, void *, LONG);



   FUNCTION

      This function allows to hash memory region using
      simplified PJW routine extended to work on 64bit
      datatype.



   INPUTS

      vuq    - Pointer to 64bit datatype. Can be NULL so the
               only output will be lower 32 bits through the
               'hash'.

      memptr - Data pointer.

      memlen - Length of that data.



   RETURNS

      Returns 32bit or 64bit value or 0 if all the data is
      0.



   BASES

      None.



   NOTES

      This function should produce the very same values as
      the 'txt_pjw64hash()' one.

      Important! Arg. in 'vuq' must generally be initialised
      to 0 before passing!



   SEE ALSO

      txt_pjw64hash(), mem_fnv64hash()



   EXAMPLE

      /*
       * Example on how to compute the checksum.
      */
      ...

      VUQUAD vuq;
      UBYTE buffer[256];
      LONG readlen;
      LONG fd;

      vuq.vuq_hi = 0;

      vuq.vuq_lo = 0;

      if ((fd = Open("ram:disk.info", MODE_OLDFILE)))
      {
        while ((readlen = Read(fd, buffer, 256)))
        {
          mem_pjw64hash(&vuq, buffer, readlen);
        }

        Close(fd);
      }

      FPrintf(Output(), "CSUM = 0x%08lx%08lx\n",
                              vuq.vuq_hi, vuq.vuq_lo);

      ...



   BUGS

      None known.



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