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/* HEADER Testing 64-bit integer operations (U64). */
int i, j;
char buf[22];
static const int64_t intval[] = {
0,
-1,
1,
37,
0x7fffffffUL,
0x80000000UL,
0x99999999UL,
0x7fffffffffffffffULL,
0x8000000000000000ULL,
};
for (i = 0; i < sizeof(intval)/sizeof(intval[0]); ++i) {
U64 a, b;
a.low = (uint32_t)intval[i];
a.high = (uint32_t)(intval[i] >> 32);
printI64(buf, &a);
read64(&b, buf);
OKF(memcmp(&a, &b, sizeof(a)) == 0,
("[%d]: %" PRId64 " <> %s <> %" PRId64, i, intval[i], buf,
((uint64_t)b.high) << 32 | b.low));
}
for (i = 0; i < sizeof(intval)/sizeof(intval[0]); ++i) {
for (j = i; j < sizeof(intval)/sizeof(intval[0]); ++j) {
U64 a, b;
uint64_t d;
a.low = (uint32_t)intval[i];
a.high = (uint32_t)(intval[i] >> 32);
b.low = (uint32_t)intval[j];
b.high = (uint32_t)(intval[j] >> 32);
u64Incr(&a, &b);
d = (uint64_t)a.high << 32 | a.low;
OKF(intval[i] + intval[j] == d,
("%" PRId64 " + %" PRId64 " = %" PRId64 " <> %" PRId64, intval[i],
intval[j], intval[i] + intval[j], d));
}
}
for (i = 0; i < sizeof(intval)/sizeof(intval[0]); ++i) {
for (j = i; j < sizeof(intval)/sizeof(intval[0]); ++j) {
U64 a, b, c;
uint64_t d;
a.low = (uint32_t)intval[i];
a.high = (uint32_t)(intval[i] >> 32);
b.low = (uint32_t)intval[j];
b.high = (uint32_t)(intval[j] >> 32);
u64Subtract(&a, &b, &c);
d = (uint64_t)c.high << 32 | c.low;
OKF(intval[i] - intval[j] == d,
("%" PRId64 " - %" PRId64 " = %" PRId64 " <> %" PRId64, intval[i],
intval[j], intval[i] - intval[j], d));
}
}
{
U64 old_val, new_val;
old_val.low = 7;
old_val.high = 0;
new_val = old_val;
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 0) == 0, "cwrap1");
new_val.low = 8;
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 0) == 0, "cwrap2");
new_val.low = 6;
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 0) == 32, "cwrap3");
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 1) == 32
&& new_val.low == 6 && new_val.high == 1, "cwrap4");
old_val.low = 7;
old_val.high = 0xffffffffU;
new_val.low = 7;
new_val.high = old_val.high;
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 0) == 0, "cwrap5");
new_val.low = 8;
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 0) == 0, "cwrap6");
new_val.low = 6;
new_val.high = 0;
OK(netsnmp_c64_check_for_32bit_wrap(&old_val, &new_val, 0) == 64, "cwrap7");
}
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