include/cgen/bitset.h

   1 /* Header file the type CGEN_BITSET.
   2    Copyright (C) 2002-2021 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU opcodes library.
   5
   6    This library is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    It is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this library; see the file COPYING3.  If not, write to the
  18    Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  19    02110-1301, USA.  */
  20
  21 #ifndef CGEN_BITSET_H
  22 #define CGEN_BITSET_H
  23
  24 #ifdef __cplusplus
  25 extern "C" {
  26 #endif
  27
  28 /* A bitmask represented as a string.
  29    Each member of the set is represented as a bit
  30    in the string. Bytes are indexed from left to right in the string and
  31    bits from most significant to least within each byte.
  32
  33    For example, the bit representing member number 6 is (set->bits[0] & 0x02).
  34 */
  35 typedef struct cgen_bitset
  36 {
  37   unsigned length;
  38   char *bits;
  39 } CGEN_BITSET;
  40
  41 extern CGEN_BITSET *cgen_bitset_create (unsigned);
  42 extern void cgen_bitset_init (CGEN_BITSET *, unsigned);
  43 extern void cgen_bitset_clear (CGEN_BITSET *);
  44 extern void cgen_bitset_add (CGEN_BITSET *, unsigned);
  45 extern void cgen_bitset_set (CGEN_BITSET *, unsigned);
  46 extern int cgen_bitset_compare (CGEN_BITSET *, CGEN_BITSET *);
  47 extern void cgen_bitset_union (CGEN_BITSET *, CGEN_BITSET *, CGEN_BITSET *);
  48 extern int cgen_bitset_intersect_p (CGEN_BITSET *, CGEN_BITSET *);
  49 extern int cgen_bitset_contains (CGEN_BITSET *, unsigned);
  50 extern CGEN_BITSET *cgen_bitset_copy (CGEN_BITSET *);
  51
  52 #ifdef __cplusplus
  53 } // extern "C"
  54 #endif
  55
  56 #endif