/* Bitset vectors.
- Copyright (C) 2001 Free Software Foundation, Inc.
-This file is part of GCC.
+ Copyright (C) 2001-2002, 2004-2006, 2009-2011 Free Software
+ Foundation, Inc.
-GCC is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
-GCC is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
-#include <stdlib.h>
#include "bitsetv.h"
+#include <stdlib.h>
+
/* Create a vector of N_VECS bitsets, each of N_BITS, and of
type TYPE. */
bitset *
-bitsetv_alloc (n_vecs, n_bits, type)
- unsigned int n_vecs;
- unsigned int n_bits;
- enum bitset_type type;
+bitsetv_alloc (bitset_bindex n_vecs, bitset_bindex n_bits,
+ enum bitset_type type)
{
- unsigned int vector_bytes;
- unsigned int bytes;
+ size_t vector_bytes;
+ size_t bytes;
bitset *bsetv;
- unsigned int i;
-
+ bitset_bindex i;
+
/* Determine number of bytes for each set. */
bytes = bitset_bytes (type, n_bits);
-
+
+ /* If size calculation overflows, memory is exhausted. */
+ if (BITSET_SIZE_MAX / (sizeof (bitset) + bytes) <= n_vecs)
+ xalloc_die ();
+
/* Allocate vector table at head of bitset array. */
- vector_bytes = (n_vecs + 1) * sizeof (bitset);
- bsetv = (bitset *) xcalloc (1, vector_bytes + bytes * n_vecs);
-
+ vector_bytes = (n_vecs + 1) * sizeof (bitset) + bytes - 1;
+ vector_bytes -= vector_bytes % bytes;
+ bsetv = xcalloc (1, vector_bytes + bytes * n_vecs);
+
for (i = 0; i < n_vecs; i++)
{
- bsetv[i] = (bitset) ((char *) bsetv + vector_bytes + i * bytes);
+ bsetv[i] = (bitset) (void *) ((char *) bsetv + vector_bytes + i * bytes);
bitset_init (bsetv[i], n_bits, type);
}
-
+
/* Null terminate table. */
bsetv[i] = 0;
return bsetv;
/* Create a vector of N_VECS bitsets, each of N_BITS, and with
attribute hints specified by ATTR. */
bitset *
-bitsetv_create (n_vecs, n_bits, attr)
- unsigned int n_vecs;
- unsigned int n_bits;
- unsigned int attr;
+bitsetv_create (bitset_bindex n_vecs, bitset_bindex n_bits, unsigned int attr)
{
enum bitset_type type;
-
+
type = bitset_type_choose (n_bits, attr);
return bitsetv_alloc (n_vecs, n_bits, type);
}
/* Free bitset vector BSETV. */
void
-bitsetv_free (bsetv)
- bitset *bsetv;
+bitsetv_free (bitsetv bsetv)
{
- unsigned int i;
+ bitset_bindex i;
for (i = 0; bsetv[i]; i++)
BITSET_FREE_ (bsetv[i]);
/* Zero a vector of bitsets. */
void
-bitsetv_zero (bsetv)
- struct bitset_struct **bsetv;
+bitsetv_zero (bitsetv bsetv)
{
- unsigned int i;
-
+ bitset_bindex i;
+
for (i = 0; bsetv[i]; i++)
bitset_zero (bsetv[i]);
}
/* Set a vector of bitsets to ones. */
void
-bitsetv_ones (bsetv)
- bitset *bsetv;
+bitsetv_ones (bitsetv bsetv)
{
- unsigned int i;
-
+ bitset_bindex i;
+
for (i = 0; bsetv[i]; i++)
bitset_ones (bsetv[i]);
}
+/* Given a vector BSETV of N bitsets of size N, modify its contents to
+ be the transitive closure of what was given. */
+void
+bitsetv_transitive_closure (bitsetv bsetv)
+{
+ bitset_bindex i;
+ bitset_bindex j;
+
+ for (i = 0; bsetv[i]; i++)
+ for (j = 0; bsetv[j]; j++)
+ if (bitset_test (bsetv[j], i))
+ bitset_or (bsetv[j], bsetv[j], bsetv[i]);
+}
+
+
+/* Given a vector BSETV of N bitsets of size N, modify its contents to
+ be the reflexive transitive closure of what was given. This is
+ the same as transitive closure but with all bits on the diagonal
+ of the bit matrix set. */
+void
+bitsetv_reflexive_transitive_closure (bitsetv bsetv)
+{
+ bitset_bindex i;
+
+ bitsetv_transitive_closure (bsetv);
+ for (i = 0; bsetv[i]; i++)
+ bitset_set (bsetv[i], i);
+}
+
+
/* Dump the contents of a bitset vector BSETV with N_VECS elements to
FILE. */
void
-bitsetv_dump (file, title, subtitle, bsetv)
- FILE *file;
- const char *title, *subtitle;
- bitset *bsetv;
+bitsetv_dump (FILE *file, char const *title, char const *subtitle,
+ bitsetv bsetv)
{
- unsigned int i;
-
+ bitset_windex i;
+
fprintf (file, "%s\n", title);
for (i = 0; bsetv[i]; i++)
{
- fprintf (file, "%s %d\n", subtitle, i);
+ fprintf (file, "%s %lu\n", subtitle, (unsigned long int) i);
bitset_dump (file, bsetv[i]);
}
-
+
fprintf (file, "\n");
}
void
-debug_bitsetv (bsetv)
- bitset *bsetv;
+debug_bitsetv (bitsetv bsetv)
{
- unsigned int i;
-
+ bitset_windex i;
+
for (i = 0; bsetv[i]; i++)
{
- fprintf (stderr, "%d: ", i);
+ fprintf (stderr, "%lu: ", (unsigned long int) i);
debug_bitset (bsetv[i]);
}
-
+
fprintf (stderr, "\n");
}
projects / bison.git / blobdiff