internal static UInt64 ToUInt64(BigInteger value) {
UInt64 result;
if (value.AsUInt64(out result)) {
return result;
}
throw RubyExceptions.CreateRangeError("number too big to convert into System::UInt64");
}
public static int __hash__(BigInteger self) {
#if CLR4 // TODO: we might need our own hash code implementation. This avoids assertion failure.
if (self == -2147483648) {
return -2147483648;
}
#endif
// check if it's in the Int64 or UInt64 range, and use the built-in hashcode for that instead
// this ensures that objects added to dictionaries as (U)Int64 can be looked up with Python longs
Int64 i64;
if (self.AsInt64(out i64)) {
return Int64Ops.__hash__(i64);
} else {
UInt64 u64;
if (self.AsUInt64(out u64)) {
return UInt64Ops.__hash__(u64);
}
}
// Call the DLR's BigInteger hash function, which will return an int32 representation of
// b if b is within the int32 range. We use that as an optimization for hashing, and
// assert the assumption below.
int hash = self.GetHashCode();
#if DEBUG
int i;
if (self.AsInt32(out i)) {
Debug.Assert(i == hash, String.Format("hash({0}) == {1}", i, hash));
}
#endif
return hash;
}
public static bool AsUInt64(BigInteger self, out ulong res) {
return self.AsUInt64(out res);
}
internal static string/*!*/ ConvertToHostString(BigInteger/*!*/ address) {
Assert.NotNull(address);
ulong u;
if (address.AsUInt64(out u)) {
if (u <= UInt32.MaxValue) {
// IPv4:
return ConvertToHostString((uint)u);
} else {
// IPv6:
byte[] bytes = new byte[8];
for (int i = bytes.Length - 1; i >= 0; --i) {
bytes[i] = (byte)(u & 0xff);
u >>= 8;
}
return new IPAddress(bytes).ToString();
}
} else {
throw RubyExceptions.CreateRangeError("bignum too big to convert into `quad long'");
}
}
