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//===--- clause.h -----------------------------------------------------------===
//
// satoko: Satisfiability solver
//
// This file is distributed under the BSD 2-Clause License.
// See LICENSE for details.
//
//===------------------------------------------------------------------------===
#ifndef satoko__clause_h
#define satoko__clause_h
#include "types.h"
#include "misc/util/abc_global.h"
ABC_NAMESPACE_HEADER_START
struct clause {
unsigned f_learnt : 1;
unsigned f_mark : 1;
unsigned f_reallocd : 1;
unsigned f_deletable : 1;
unsigned lbd : 28;
unsigned size;
union {
unsigned lit;
clause_act_t act;
} data[0];
};
//===------------------------------------------------------------------------===
// Clause API
//===------------------------------------------------------------------------===
static inline int clause_compare(const void *p1, const void *p2)
{
const struct clause *c1 = (const struct clause *)p1;
const struct clause *c2 = (const struct clause *)p2;
if (c1->size > 2 && c2->size == 2)
return 1;
if (c1->size == 2 && c2->size > 2)
return 0;
if (c1->size == 2 && c2->size == 2)
return 0;
if (c1->lbd > c2->lbd)
return 1;
if (c1->lbd < c2->lbd)
return 0;
return c1->data[c1->size].act < c2->data[c2->size].act;
}
static inline void clause_print(struct clause *clause)
{
unsigned i;
printf("{ ");
for (i = 0; i < clause->size; i++)
printf("%u ", clause->data[i].lit);
printf("}\n");
}
static inline void clause_dump(FILE *file, struct clause *clause, int no_zero_var)
{
unsigned i;
for (i = 0; i < clause->size; i++) {
int var = (clause->data[i].lit >> 1);
char pol = (clause->data[i].lit & 1);
fprintf(file, "%d ", pol ? -(var + no_zero_var) : (var + no_zero_var));
}
if (no_zero_var)
fprintf(file, "0\n");
else
fprintf(file, "\n");
}
ABC_NAMESPACE_HEADER_END
#endif /* satoko__clause_h */
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