ltl2ba-nix/set.c

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/***** ltl2ba : set.c *****/
/* Written by Denis Oddoux, LIAFA, France */
/* Copyright (c) 2001 Denis Oddoux */
/* Modified by Paul Gastin, LSV, France */
/* Copyright (c) 2007 Paul Gastin */
/* */
/* 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 2 of the License, or */
/* (at your option) any later version. */
/* */
/* 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 this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA*/
/* */
/* Based on the translation algorithm by Gastin and Oddoux, */
/* presented at the 13th International Conference on Computer Aided */
/* Verification, CAV 2001, Paris, France. */
/* Proceedings - LNCS 2102, pp. 53-65 */
/* */
/* Send bug-reports and/or questions to Paul Gastin */
/* http://www.lsv.ens-cachan.fr/~gastin */
2018-08-09 10:46:27 +02:00
#include "config.h"
#include "ltl2ba.h"
extern FILE *tl_out;
extern int node_size, sym_size, scc_size;
extern char **sym_table;
int mod = 8 * sizeof(int);
/* type = 2 for scc set, 1 for symbol sets, 0 for nodes sets */
#define set_size(t) (t==1?sym_size:(t==2?scc_size:node_size))
int *new_set(int type) /* creates a new set */
{
return (int *)tl_emalloc(set_size(type) * sizeof(int));
}
int *clear_set(int *l, int type) /* clears the set */
{
int i;
for(i = 0; i < set_size(type); i++) {
l[i] = 0;
}
return l;
}
int *make_set(int n, int type) /* creates the set {n}, or the empty set if n = -1 */
{
int *l = clear_set(new_set(type), type);
if(n == -1) return l;
l[n/mod] = 1 << (n%mod);
return l;
}
void copy_set(int *from, int *to, int type) /* copies a set */
{
int i;
for(i = 0; i < set_size(type); i++)
to[i] = from[i];
}
int *dup_set(int *l, int type) /* duplicates a set */
{
int i, *m = new_set(type);
for(i = 0; i < set_size(type); i++)
m[i] = l[i];
return m;
}
void merge_sets(int *l1, int *l2, int type) /* puts the union of the two sets in l1 */
{
int i;
for(i = 0; i < set_size(type); i++)
l1[i] = l1[i] | l2[i];
}
void do_merge_sets(int *l, int *l1, int *l2, int type) /* makes the union of two sets */
{
int i;
for(i = 0; i < set_size(type); i++)
l[i] = l1[i] | l2[i];
}
int *intersect_sets(int *l1, int *l2, int type) /* makes the intersection of two sets */
{
int i, *l = new_set(type);
for(i = 0; i < set_size(type); i++)
l[i] = l1[i] & l2[i];
return l;
}
int empty_intersect_sets(int *l1, int *l2, int type) /* tests intersection of two sets */
{
int i, test = 0;
for(i = 0; i < set_size(type); i++)
test |= l1[i] & l2[i];
return !test;
}
void add_set(int *l, int n) /* adds an element to a set */
{
l[n/mod] |= 1 << (n%mod);
}
void rem_set(int *l, int n) /* removes an element from a set */
{
l[n/mod] &= (-1 - (1 << (n%mod)));
}
void spin_print_set(int *pos, int *neg) /* prints the content of a set for spin */
{
int i, j, start = 1;
for(i = 0; i < sym_size; i++)
for(j = 0; j < mod; j++) {
if(pos[i] & (1 << j)) {
if(!start)
fprintf(tl_out, " && ");
fprintf(tl_out, "%s", sym_table[mod * i + j]);
start = 0;
}
if(neg[i] & (1 << j)) {
if(!start)
fprintf(tl_out, " && ");
fprintf(tl_out, "!%s", sym_table[mod * i + j]);
start = 0;
}
}
if(start)
fprintf(tl_out, "1");
}
void print_set(int *l, int type) /* prints the content of a set */
{
int i, j, start = 1;;
if(type != 1) fprintf(tl_out, "{");
for(i = 0; i < set_size(type); i++)
for(j = 0; j < mod; j++)
if(l[i] & (1 << j)) {
switch(type) {
case 0: case 2:
if(!start) fprintf(tl_out, ",");
fprintf(tl_out, "%i", mod * i + j);
break;
case 1:
if(!start) fprintf(tl_out, " & ");
fprintf(tl_out, "%s", sym_table[mod * i + j]);
break;
}
start = 0;
}
if(type != 1) fprintf(tl_out, "}");
}
int empty_set(int *l, int type) /* tests if a set is the empty set */
{
int i, test = 0;
for(i = 0; i < set_size(type); i++)
test |= l[i];
return !test;
}
int same_sets(int *l1, int *l2, int type) /* tests if two sets are identical */
{
int i, test = 1;
for(i = 0; i < set_size(type); i++)
test &= (l1[i] == l2[i]);
return test;
}
int included_set(int *l1, int *l2, int type)
{ /* tests if the first set is included in the second one */
int i, test = 0;
for(i = 0; i < set_size(type); i++)
test |= (l1[i] & ~l2[i]);
return !test;
}
int in_set(int *l, int n) /* tests if an element is in a set */
{
return(l[n/mod] & (1 << (n%mod)));
}
int *list_set(int *l, int type) /* transforms a set into a list */
{
int i, j, size = 1, *list;
for(i = 0; i < set_size(type); i++)
for(j = 0; j < mod; j++)
if(l[i] & (1 << j))
size++;
list = (int *)tl_emalloc(size * sizeof(int));
list[0] = size;
size = 1;
for(i = 0; i < set_size(type); i++)
for(j = 0; j < mod; j++)
if(l[i] & (1 << j))
list[size++] = mod * i + j;
return list;
}