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counting: Let get_range_size return double

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This commit is contained in:
Cheer Xiao 2013-01-08 22:57:33 +08:00
parent afd9f77051
commit 9c4184bd9a
2 changed files with 5 additions and 5 deletions
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8
src/other.c
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@ -125,17 +125,17 @@ const char *ntop_ipaddr(const union ipaddr_t *ip)
* and last IP in the range.
* \return Size of a range.
*/
unsigned long get_range_size(const struct range_t *r)
double get_range_size(const struct range_t *r)
{
if (config.dhcp_version == VERSION_6) {
unsigned long size = 0;
double size = 0;
int i;
/* When calculating the size of an IPv6 range overflow may
* occur. In that case only the last LONG_BIT bits are
* preserved, thus we just skip the first (16 - LONG_BIT)
* bits... */
for (i = LONG_BIT / 8 < 16 ? 16 - LONG_BIT / 8 : 0; i < 16; i++) {
size <<= 8;
for (i = 0; i < 16; i++) {
size *= 256;
size += (int)r->last_ip.v6[i] - (int)r->first_ip.v6[i];
}
return size + 1;