MulTenAdd()

unsafe uint System.Xml.Xsl.XPathConvert.BigNumber.MulTenAdd ( uint digit )

inlineprivate

Definition at line 194 of file XPathConvert.cs.

        {
            _exp += 3;
            uint* ptr = stackalloc uint[5];
            for (int i = 0; i < 5; i++)
            {
                ptr[i] = 0u;
            }
            if (digit != 0)
            {
                int num = 3 - (_exp >> 5);
                if (num < 0)
                {
                    *ptr = 1u;
                }
                else
                {
                    int num2 = _exp & 0x1F;
                    if (num2 < 4)
                    {
                        ptr[num + 1] = digit >> num2;
                        if (num2 > 0)
                        {
                            ptr[num] = digit << 32 - num2;
                        }
                    }
                    else
                    {
                        ptr[num] = digit << 32 - num2;
                    }
                }
            }
            ptr[1] += AddU(ref *ptr, _u0 << 30);
            ptr[2] += AddU(ref _u0, (_u0 >> 2) + (_u1 << 30));
            if (ptr[1] != 0)
            {
                ptr[2] += AddU(ref _u0, ptr[1]);
            }
            ptr[3] += AddU(ref _u1, (_u1 >> 2) + (_u2 << 30));
            if (ptr[2] != 0)
            {
                ptr[3] += AddU(ref _u1, ptr[2]);
            }
            ptr[4] = AddU(ref _u2, (_u2 >> 2) + ptr[3]);
            if (ptr[4] != 0)
            {
                *ptr = (*ptr >> 1) | (*ptr & 1u) | (_u0 << 31);
                _u0 = (_u0 >> 1) | (_u1 << 31);
                _u1 = (_u1 >> 1) | (_u2 << 31);
                _u2 = (_u2 >> 1) | 0x80000000u;
                _exp++;
            }
            return *ptr;
        }

References System.Xml.Xsl.XPathConvert.BigNumber._exp, System.Xml.Xsl.XPathConvert.BigNumber._u0, System.Xml.Xsl.XPathConvert.BigNumber._u1, System.Xml.Xsl.XPathConvert.BigNumber._u2, System.Xml.Xsl.XPathConvert.AddU(), and System.Xml.Dictionary.

Referenced by System.Xml.Xsl.XPathConvert.BigNumber.BigNumber().