public static void u64Encode(IBitBufferWriter self, u64 value)
{
bool one = false;
increment(ref value, ref one);
u128 map = 0;
i32 index = -1;
for (var i = u64Lookup.Length - 1; i >= 0; i--)
{
if (greaterOrEquals(value, one, u64Lookup[i]))
{
if (index == -1)
{
// last 1 leads to unique double 11 which is first and only one
index = i + 1;
map = WriteBit(map, index, true);
}
map = WriteBit(map, i, true);
minus(ref value, ref one, u64Lookup[i]);
}
}
for (var i = 0; i <= index; i++)
{
// TODO: optimize
var bit = ExtractBit(map, i);
self.b(bit);
}
}
private static bool ExtractBit(u128 value, int bitOffset) => (value & (u128.One << bitOffset)) != 0;
static bool INumberBase <int> .TryConvertToChecked <TOther>(int value, [NotNullWhen(true)] out TOther result)
{
// In order to reduce overall code duplication and improve the inlinabilty of these
// methods for the corelib types we have `ConvertFrom` handle the same sign and
// `ConvertTo` handle the opposite sign. However, since there is an uneven split
// between signed and unsigned types, the one that handles unsigned will also
// handle `Decimal`.
//
// That is, `ConvertFrom` for `int` will handle the other signed types and
// `ConvertTo` will handle the unsigned types
if (typeof(TOther) == typeof(byte))
{
byte actualResult = checked ((byte)value);
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(char))
{
char actualResult = checked ((char)value);
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(decimal))
{
decimal actualResult = value;
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(ushort))
{
ushort actualResult = checked ((ushort)value);
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(uint))
{
uint actualResult = checked ((uint)value);
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(ulong))
{
ulong actualResult = checked ((ulong)value);
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(UInt128))
{
UInt128 actualResult = checked ((UInt128)value);
result = (TOther)(object)actualResult;
return(true);
}
else if (typeof(TOther) == typeof(nuint))
{
nuint actualResult = checked ((nuint)value);
result = (TOther)(object)actualResult;
return(true);
}
else
{
result = default !;
private static u128 WriteBit(u128 value, int bitOffset, bool on)
{
u128 onn = on ? u128.One << bitOffset : 0;
return((value & ~(u128.One << bitOffset)) | onn);
}
private static bool TryConvertFromTruncating <TOther>(TOther value, out ushort result)
where TOther : INumberBase <TOther>
{
// In order to reduce overall code duplication and improve the inlinabilty of these
// methods for the corelib types we have `ConvertFrom` handle the same sign and
// `ConvertTo` handle the opposite sign. However, since there is an uneven split
// between signed and unsigned types, the one that handles unsigned will also
// handle `Decimal`.
//
// That is, `ConvertFrom` for `ushort` will handle the other unsigned types and
// `ConvertTo` will handle the signed types
if (typeof(TOther) == typeof(byte))
{
byte actualValue = (byte)(object)value;
result = actualValue;
return(true);
}
else if (typeof(TOther) == typeof(char))
{
char actualValue = (char)(object)value;
result = actualValue;
return(true);
}
else if (typeof(TOther) == typeof(decimal))
{
decimal actualValue = (decimal)(object)value;
result = (actualValue >= MaxValue) ? MaxValue :
(actualValue <= MinValue) ? MinValue : (ushort)actualValue;
return(true);
}
else if (typeof(TOther) == typeof(uint))
{
uint actualValue = (uint)(object)value;
result = (ushort)actualValue;
return(true);
}
else if (typeof(TOther) == typeof(ulong))
{
ulong actualValue = (ulong)(object)value;
result = (ushort)actualValue;
return(true);
}
else if (typeof(TOther) == typeof(UInt128))
{
UInt128 actualValue = (UInt128)(object)value;
result = (ushort)actualValue;
return(true);
}
else if (typeof(TOther) == typeof(nuint))
{
nuint actualValue = (nuint)(object)value;
result = (ushort)actualValue;
return(true);
}
else
{
result = default;
return(false);
}
}
