1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
typedef uint32_t literal;
literal neg (literal l)
{
return l ^ 0x1;
}
typedef struct _clause
{
struct clause *wl_next;
struct clause *wl_prev;
literal first_watch;
literal second_watch;
// End of first 16-byte cache line (on 32 bit machines)
uint32_t length;
literal body[0];
} clause;
clause * createClause (literal *lits, uint32_t count)
{
assert(count >= 2);
size_t s = sizeof(clause) + count * sizeof(literal);
clause *c = malloc(s);
memset(c,0,s);
c->length = c;
c->first_watch = lits[0];
c->second_watch = lits[1];
for (uint32_t i = 2; i < count; ++i)
{
c->body[i - 2] = lits[i];
}
return c;
}
int main (void) {
uint32_t line[4] = {0x23, 0x42, 0x43, 0x22};
clause *c = createClause(line,4);
assert(c->wl_next == NULL);
assert(c->wl_prev == NULL);
assert(neg(c->body[1]) == 0x23);
return 1;
}
|
