public static EcmaValue ToBigIntN(EcmaValue value, int bits)
{
value = value.ToBigInt();
if (bits <= 0)
{
return(value0n);
}
if (bits == 64)
{
return(ToBigInt64(value));
}
if (EcmaValue.GetNumberCoercion(value) == EcmaNumberType.BigInt64)
{
if (bits > 64)
{
return(value);
}
long r = 1 << bits;
long m = 1 << (bits - 1);
long v = value.ToInt64() % r;
return(ToBigInt(v < -m ? v + r : v >= m ? v - r : v));
}
BigInteger u = ToBigInteger(value);
BigInteger bitsm0 = BigInteger.Pow(2, bits);
BigInteger bitsm1 = BigInteger.Pow(2, bits - 1);
BigInteger rem = BigInteger.Remainder(u, bitsm0);
return(ToBigInt(rem < -bitsm1 ? rem + bitsm1 : rem >= bitsm1 ? rem - bitsm0 : rem));
}
public static EcmaValue ToBigUIntN(EcmaValue value, int bits)
{
value = value.ToBigInt();
if (bits <= 0)
{
return(value0n);
}
if (bits == 64)
{
return(ToBigUInt64(value));
}
if (EcmaValue.GetNumberCoercion(value) == EcmaNumberType.BigInt64)
{
if (bits > 64)
{
return(ToBigInt(unchecked ((ulong)value.ToInt64())));
}
long v = value.ToInt64();
long mask = (1 << bits) - 1;
return(ToBigInt(unchecked ((ulong)(v & mask))));
}
BigInteger u = ToBigInteger(value);
BigInteger bitsm0 = BigInteger.Pow(2, bits);
BigInteger rem = BigInteger.Remainder(u, bitsm0);
return(ToBigInt(rem < 0 ? rem + bitsm0 : rem));
}
public static EcmaValue ToBigInt64(this EcmaValue value)
{
value = value.ToBigInt();
if (EcmaValue.GetNumberCoercion(value) == EcmaNumberType.BigInt64)
{
return(value);
}
byte[] byteArray = ((BigInteger)value.GetUnderlyingObject()).ToByteArray();
return(ToBigInt(BitConverter.ToInt64(byteArray, 0)));
}
public static EcmaValue ToBigUInt64(this EcmaValue value)
{
value = value.ToBigInt();
if (EcmaValue.GetNumberCoercion(value) == EcmaNumberType.BigInt64)
{
long v = value.ToInt64();
return(v >= mod63?ToBigInt(new BigInteger(unchecked ((ulong)v))) : value);
}
BigInteger rem = BigInteger.Remainder((BigInteger)value.GetUnderlyingObject(), mod64);
return(ToBigInt(rem < 0 ? rem + mod64 : rem));
}
public static EcmaValue Trunc(EcmaValue value)
{
if (value.Type != EcmaValueType.Number)
{
value = value.ToNumber();
}
if (EcmaValue.GetNumberCoercion(value) != EcmaNumberType.Double)
{
return(value);
}
return(Math.Truncate(value.ToDouble()));
}
public static EcmaValue Pow(this EcmaValue x, EcmaValue y)
{
switch (EcmaValue.GetNumberCoercion(x, y))
{
case EcmaNumberType.BigInt:
return(BigIntHelper.Pow(x, y));
case EcmaNumberType.BigInt64:
return(BigIntHelper.Pow64(x, y));
}
return(EcmaMath.Pow(x, y));
}
public static EcmaValue RightShift(this EcmaValue x, EcmaValue y)
{
switch (EcmaValue.GetNumberCoercion(x, y))
{
case EcmaNumberType.BigInt:
return(BigIntHelper.RightShift(x, y));
case EcmaNumberType.BigInt64:
return(BigIntHelper.RightShift64(x, y));
}
return((+x).ToInt32() >> (+y).ToInt32());
}
public static EcmaValue BitwiseOr(this EcmaValue x, EcmaValue y)
{
switch (EcmaValue.GetNumberCoercion(x, y))
{
case EcmaNumberType.BigInt:
return(BigIntHelper.BitwiseOr(x, y));
case EcmaNumberType.BigInt64:
return(BigIntHelper.BitwiseOr64(x, y));
}
return((+x).ToInt32() | (+y).ToInt32());
}
public static int Compare(EcmaValue x, EcmaValue y)
{
if (x.Type != EcmaValueType.BigInt)
{
return(-Compare(y, x));
}
BigInteger bigInt = ToBigInteger(x);
if (EcmaValue.GetNumberCoercion(y) == EcmaNumberType.Double)
{
return(((double)bigInt).CompareTo(y.ToDouble()));
}
return(bigInt.CompareTo(y.ToInt64()));
}
public static EcmaValue Sign(EcmaValue value)
{
switch (EcmaValue.GetNumberCoercion(value))
{
case EcmaNumberType.Int64:
return(Math.Sign(value.ToInt64()));
case EcmaNumberType.Int32:
return(Math.Sign(value.ToInt32()));
}
double x = value.ToDouble();
return(Double.IsNaN(x) ? EcmaValue.NaN : x == 0 ? x : Math.Sign(x));
}
public static EcmaValue Abs(EcmaValue value)
{
switch (EcmaValue.GetNumberCoercion(value))
{
case EcmaNumberType.Double:
return(Math.Abs(value.ToDouble()));
case EcmaNumberType.Int64:
return(Math.Abs(value.ToInt64()));
case EcmaNumberType.Int32:
return(Math.Abs(value.ToInt32()));
}
return(Abs(value.ToNumber()));
}
public static EcmaValue Ceil(EcmaValue value)
{
if (value.Type != EcmaValueType.Number)
{
value = value.ToNumber();
}
if (EcmaValue.GetNumberCoercion(value) != EcmaNumberType.Double)
{
return(value);
}
double x = value.ToDouble();
double c = Math.Ceiling(x);
return(c == 0 && x < 0 ? -0d : c);
}
public static string ToString(EcmaValue value, int radix)
{
ThrowIfArgumentNotBigInt(value);
if (radix < 2 || radix > 36)
{
throw new EcmaRangeErrorException(InternalString.Error.InvalidToStringRadix);
}
if (EcmaValue.GetNumberCoercion(value) == EcmaNumberType.BigInt64)
{
return(NumberPrototype.GetString(value.ToInt64(), radix));
}
BigInteger bigInt = ToBigInteger(value);
if (radix == 10)
{
return(bigInt.ToString());
}
if (radix == 16)
{
return(bigInt.ToString("x"));
}
int digits = biggestLong[radix - 2];
bool isMinus = bigInt < 0;
if (isMinus)
{
bigInt = -bigInt;
}
BigInteger divisor = BigInteger.Pow(radix, digits);
StringBuilder sb = new StringBuilder();
while (bigInt > divisor)
{
bigInt = BigInteger.DivRem(bigInt, divisor, out BigInteger remainder);
string s = NumberPrototype.GetString((long)remainder, radix);
sb.Insert(0, s);
if (s.Length < digits)
{
sb.Insert(0, "0", digits - s.Length);
}
}
sb.Insert(0, NumberPrototype.GetString((long)bigInt, radix));
if (isMinus)
{
sb.Insert(0, '-');
}
return(sb.ToString());
}
public static EcmaValue Round(EcmaValue value)
{
if (value.Type != EcmaValueType.Number)
{
value = value.ToNumber();
}
if (EcmaValue.GetNumberCoercion(value) != EcmaNumberType.Double)
{
return(value);
}
double x = value.ToDouble();
if (x == 0)
{
return(x);
}
double r = Math.Floor(x + 0.5);
return(r == 0 && x < 0 ? -0d : r);
}
