GetBitLength()

long System.Numerics.BigInteger.GetBitLength ( )

inline

Definition at line 2112 of file BigInteger.cs.

    {
        int sign = _sign;
        uint[] bits = _bits;
        int num;
        uint num2;
        if (bits == null)
        {
            num = 1;
            num2 = (uint)((sign < 0) ? (-sign) : sign);
        }
        else
        {
            num = bits.Length;
            num2 = bits[num - 1];
        }
        long num3 = (long)num * 32L - BitOperations.LeadingZeroCount(num2);
        if (sign >= 0)
        {
            return num3;
        }
        if ((num2 & (num2 - 1)) != 0)
        {
            return num3;
        }
        for (int num4 = num - 2; num4 >= 0; num4--)
        {
            if (bits[num4] != 0)
            {
                return num3;
            }
        }
        return num3 - 1;
    }

References System.Numerics.BigInteger._bits, System.Numerics.BigInteger._sign, System.L, and System.Numerics.BitOperations.LeadingZeroCount().