BigInteger() [6/12]

System.Numerics.BigInteger.BigInteger ( double value )

inline

Definition at line 190 of file BigInteger.cs.

    {
        if (!double.IsFinite(value))
        {
            if (double.IsInfinity(value))
            {
                throw new OverflowException(System.SR.Overflow_BigIntInfinity);
            }
            throw new OverflowException(System.SR.Overflow_NotANumber);
        }
        _sign = 0;
        _bits = null;
        NumericsHelpers.GetDoubleParts(value, out var sign, out var exp, out var man, out var _);
        if (man == 0L)
        {
            this = Zero;
            return;
        }
        if (exp <= 0)
        {
            if (exp <= -64)
            {
                this = Zero;
                return;
            }
            this = man >> -exp;
            if (sign < 0)
            {
                _sign = -_sign;
            }
            return;
        }
        if (exp <= 11)
        {
            this = man << exp;
            if (sign < 0)
            {
                _sign = -_sign;
            }
            return;
        }
        man <<= 11;
        exp -= 11;
        int num = (exp - 1) / 32 + 1;
        int num2 = num * 32 - exp;
        _bits = new uint[num + 2];
        _bits[num + 1] = (uint)(man >> num2 + 32);
        _bits[num] = (uint)(man >> num2);
        if (num2 > 0)
        {
            _bits[num - 1] = (uint)((int)man << 32 - num2);
        }
        _sign = sign;
    }

References System.Numerics.BigInteger._bits, System.Numerics.BigInteger._sign, System.Numerics.NumericsHelpers.GetDoubleParts(), System.L, System.SR.Overflow_BigIntInfinity, System.SR.Overflow_NotANumber, System.value, and System.Numerics.BigInteger.Zero.