modules/ma/bitmask.h

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DEFINITIONS

This source file includes following functions.
  1. mask_t

   1 /***************************************
   2   $Revision: 1.9 $
   3 
   4   bitmask (ma) - bitmask.h - header file for bitmask library
   5 
   6   Status: NOT REVUED, TESTED, INCOMPLETE
   7 
   8   Design and implementation by: Marek Bukowy
   9 
  10   ******************/ /******************
  11   Copyright (c) 1999,2000,2001,2002               RIPE NCC
  12  
  13   All Rights Reserved
  14   
  15   Permission to use, copy, modify, and distribute this software and its
  16   documentation for any purpose and without fee is hereby granted,
  17   provided that the above copyright notice appear in all copies and that
  18   both that copyright notice and this permission notice appear in
  19   supporting documentation, and that the name of the author not be
  20   used in advertising or publicity pertaining to distribution of the
  21   software without specific, written prior permission.
  22   
  23   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
  24   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
  25   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
  26   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
  27   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  28   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  29   ***************************************/
  30 
  31 
  32 #ifndef READ_BITMASK
  33 #define READ_BITMASK
  34 
  35 #define MASK_BITS_BASETYPE unsigned int
  36 #define MASK_BITS_BASESIZE (8 * sizeof (MASK_BITS_BASETYPE))
  37 
  38 /* size of the mask: to keep things simple, there is only one size
  39    that must suit everybody. The requirements are listed below.
  40 
  41    Marek: Aspects. Not many so far, about 30-40 possible.
  42    Chris: Query types, 78 at the moment, probably less than 128 at the end
  43 */
  44 
  45 
  46 #define MASK_MAX 128
  47 #define MASK_BITS_WORDS    (MASK_MAX / MASK_BITS_BASESIZE + 1)
  48 
  49 typedef struct {
  50   MASK_BITS_BASETYPE  data[MASK_BITS_WORDS];
  51 } mask_t;
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  52 
  53 
  54 #define MA_END (-1)
  55 
  56 #ifdef __cplusplus
  57 extern "C" {
  58 #endif
  59 
  60 void MA_free(mask_t *m);
  61 int MA_isset(mask_t d, unsigned b);
  62 void MA_set(mask_t *m_ptr, unsigned b, unsigned v);
  63 void MA_clear(mask_t *m_ptr);
  64 mask_t MA_new(int n,...);
  65 void MA_prt(mask_t m);
  66 mask_t MA_and(mask_t a, mask_t b);
  67 mask_t MA_xor(mask_t a, mask_t b);
  68 mask_t MA_or(mask_t a, mask_t b);
  69 mask_t MA_not(mask_t a);
  70 int MA_bitcount(mask_t m);
  71 char *MA_to_string(mask_t mask, char * const *tokens);
  72 
  73 #define MA_eq(a,b) (memcmp( &(a), &(b), sizeof(mask_t))==0)
  74 
  75 #ifdef __cplusplus
  76 }
  77 
  78 #endif
  79 
  80 
  81 #endif /* READ_BITMASK */

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