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AK: Add IPv4Address::netmask_from_cidr

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Maciej 2022-03-26 10:35:52 +01:00 • committed by Sam Atkins
parent b85666b3d2
commit 36676a1604
2 changed files with 21 additions and 1 deletions
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7
AK/IPv4Address.h
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@ -119,6 +119,13 @@ public:
return IPv4Address(a, b, c, d);
}
static constexpr IPv4Address netmask_from_cidr(int cidr)
{
VERIFY(cidr >= 0 && cidr <= 32);
u32 value = 0xffffffffull << (32 - cidr);
return IPv4Address((value & 0xff000000) >> 24, (value & 0xff0000) >> 16, (value & 0xff00) >> 8, (value & 0xff));
}
constexpr in_addr_t to_in_addr_t() const { return m_data; }
constexpr u32 to_u32() const { return m_data; }