private static void ModDivCore(ref BigIntegerBuilder regNum, ref BigIntegerBuilder regDen, bool fQuo, ref BigIntegerBuilder regQuo)
{
regQuo.Set(0);
if (regNum._iuLast < regDen._iuLast)
{
return;
}
var num1 = regDen._iuLast + 1;
var num2 = regNum._iuLast - regDen._iuLast;
var num3 = num2;
var num4 = regNum._iuLast;
while (true)
{
if (num4 < num2)
{
num3++;
break;
}
if (regDen._bits[num4 - num2] == regNum._bits[num4])
{
num4--;
}
else
{
if (regDen._bits[num4 - num2] < regNum._bits[num4])
{
num3++;
}
break;
}
}
if (num3 == 0)
{
return;
}
if (fQuo)
{
regQuo.SetSizeLazy(num3);
}
var num5 = regDen._bits[num1 - 1];
var num6 = regDen._bits[num1 - 2];
var num7 = NumericsHelpers.CbitHighZero(num5);
var num8 = 32 - num7;
if (num7 > 0)
{
num5 = num5 << (num7 & 31) | num6 >> (num8 & 31);
num6 = num6 << (num7 & 31);
if (num1 > 2)
{
num6 = num6 | regDen._bits[num1 - 3] >> (num8 & 31);
}
}
regNum.EnsureWritable();
var num9 = num3;
while (true)
{
var num10 = num9 - 1;
num9 = num10;
if (num10 < 0)
{
break;
}
var num = num9 + num1 > regNum._iuLast ? 0 : regNum._bits[num9 + num1];
var num11 = num;
var num12 = NumericsHelpers.MakeUlong(num11, regNum._bits[num9 + num1 - 1]);
var num13 = regNum._bits[num9 + num1 - 2];
if (num7 > 0)
{
num12 = num12 << (num7 & 63) | num13 >> (num8 & 31);
num13 = num13 << (num7 & 31);
if (num9 + num1 >= 3)
{
num13 = num13 | regNum._bits[num9 + num1 - 3] >> (num8 & 31);
}
}
var num14 = num12 / num5;
var num15 = (ulong)((uint)(num12 % num5));
if (num14 > uint.MaxValue)
{
num15 += num5 * (num14 - uint.MaxValue);
num14 = uint.MaxValue;
}
while (num15 <= uint.MaxValue && num14 * num6 > NumericsHelpers.MakeUlong((uint)num15, num13))
{
num14--;
num15 += num5;
}
if (num14 > 0)
{
var num16 = (ulong)0;
for (var i = 0; i < num1; i++)
{
num16 = num16 + regDen._bits[i] * num14;
var num17 = (uint)num16;
num16 = num16 >> 32;
if (regNum._bits[num9 + i] < num17)
{
num16 = num16 + 1;
}
regNum._bits[num9 + i] = regNum._bits[num9 + i] - num17;
}
if (num11 < num16)
{
uint num18 = 0;
for (var j = 0; j < num1; j++)
{
num18 = AddCarry(ref regNum._bits[num9 + j], regDen._bits[j], num18);
}
num14 = num14 - 1;
}
regNum._iuLast = num9 + num1 - 1;
}
if (fQuo)
{
if (num3 != 1)
{
regQuo._bits[num9] = (uint)num14;
}
else
{
regQuo._uSmall = (uint)num14;
}
}
}
regNum._iuLast = num1 - 1;
regNum.Trim();
}
private static void ModDivCore(ref BigIntegerBuilder regNum, ref BigIntegerBuilder regDen, bool fQuo, ref BigIntegerBuilder regQuo)
{
regQuo.Set((uint)0);
if (regNum._iuLast >= regDen._iuLast)
{
int num = regDen._iuLast + 1;
int num2 = regNum._iuLast - regDen._iuLast;
int cu = num2;
int index = regNum._iuLast;
while (true)
{
if (index < num2)
{
cu++;
break;
}
if (regDen._rgu[index - num2] != regNum._rgu[index])
{
if (regDen._rgu[index - num2] < regNum._rgu[index])
{
cu++;
}
break;
}
index--;
}
if (cu != 0)
{
if (fQuo)
{
regQuo.SetSizeLazy(cu);
}
uint u = regDen._rgu[num - 1];
uint num6 = regDen._rgu[num - 2];
int num7 = NumericsHelpers.CbitHighZero(u);
int num8 = 0x20 - num7;
if (num7 > 0)
{
u = (u << num7) | (num6 >> num8);
num6 = num6 << num7;
if (num > 2)
{
num6 |= regDen._rgu[num - 3] >> num8;
}
}
regNum.EnsureWritable();
int num9 = cu;
while (--num9 >= 0)
{
uint uHi = ((num9 + num) <= regNum._iuLast) ? regNum._rgu[num9 + num] : 0;
ulong num11 = NumericsHelpers.MakeUlong(uHi, regNum._rgu[(num9 + num) - 1]);
uint uLo = regNum._rgu[(num9 + num) - 2];
if (num7 > 0)
{
num11 = (num11 << num7) | (uLo >> num8);
uLo = uLo << num7;
if ((num9 + num) >= 3)
{
uLo |= regNum._rgu[(num9 + num) - 3] >> num8;
}
}
ulong num13 = num11 / ((ulong)u);
ulong num14 = (uint)(num11 % ((ulong)u));
if (num13 > 0xffffffffL)
{
num14 += (ulong)u * (num13 - 0xffffffffL);
num13 = 0xffffffffL;
}
while ((num14 <= 0xffffffffL) && ((num13 * num6) > NumericsHelpers.MakeUlong((uint)num14, uLo)))
{
num13 -= (ulong)1L;
num14 += (ulong)u;
}
if (num13 > 0L)
{
ulong num15 = 0L;
for (int i = 0; i < num; i++)
{
num15 += regDen._rgu[i] * num13;
uint num17 = (uint)num15;
num15 = num15 >> 0x20;
if (regNum._rgu[num9 + i] < num17)
{
num15 += (ulong)1L;
}
regNum._rgu[num9 + i] -= num17;
}
if (uHi < num15)
{
uint uCarry = 0;
for (int j = 0; j < num; j++)
{
uCarry = AddCarry(ref regNum._rgu[num9 + j], regDen._rgu[j], uCarry);
}
num13 -= (ulong)1L;
}
regNum._iuLast = (num9 + num) - 1;
}
if (fQuo)
{
if (cu == 1)
{
regQuo._uSmall = (uint)num13;
}
else
{
regQuo._rgu[num9] = (uint)num13;
}
}
}
regNum._iuLast = num - 1;
regNum.Trim();
}
}
}
private static void LehmerGcd(ref BigIntegerBuilder reg1, ref BigIntegerBuilder reg2)
{
var num = 1;
while (true)
{
var num1 = reg1._iuLast + 1;
var num2 = reg2._iuLast + 1;
if (num1 < num2)
{
NumericHelper.Swap(ref reg1, ref reg2);
NumericHelper.Swap(ref num1, ref num2);
}
if (num2 == 1)
{
if (num1 == 1)
{
reg1._uSmall = NumericHelper.GCD(reg1._uSmall, reg2._uSmall);
}
else if (reg2._uSmall != 0)
{
reg1.Set(NumericHelper.GCD(Mod(ref reg1, reg2._uSmall), reg2._uSmall));
}
return;
}
if (num1 == 2)
{
break;
}
if (num2 > num1 - 2)
{
var high2 = reg1.GetHigh2(num1);
var high21 = reg2.GetHigh2(num1);
var num3 = NumericsHelpers.CbitHighZero(high2 | high21);
if (num3 > 0)
{
high2 = high2 << (num3 & 63) | reg1._bits[num1 - 3] >> (32 - num3 & 31);
high21 = high21 << (num3 & 63) | reg2._bits[num1 - 3] >> (32 - num3 & 31);
}
if (high2 < high21)
{
NumericHelper.Swap(ref high2, ref high21);
NumericHelper.Swap(ref reg1, ref reg2);
}
if (high2 == ulong.MaxValue || high21 == ulong.MaxValue)
{
high2 = high2 >> 1;
high21 = high21 >> 1;
}
if (high2 == high21)
{
reg1.Sub(ref num, ref reg2);
}
else if (NumericHelper.GetHi(high21) != 0)
{
uint num4 = 1;
uint num5 = 0;
uint num6 = 0;
uint num7 = 1;
while (true)
{
uint num8 = 1;
var num9 = high2 - high21;
while (num9 >= high21 && num8 < 32)
{
num9 = num9 - high21;
num8++;
}
if (num9 >= high21)
{
var num10 = high2 / high21;
if (num10 <= uint.MaxValue)
{
num8 = (uint)num10;
num9 = high2 - num8 * high21;
}
else
{
break;
}
}
var num11 = num4 + num8 * (ulong)num6;
var num12 = num5 + num8 * (ulong)num7;
if (num11 > 2147483647 || num12 > 2147483647)
{
break;
}
else if (num9 < num12 || num9 + num11 > high21 - num6)
{
break;
}
else
{
num4 = (uint)num11;
num5 = (uint)num12;
high2 = num9;
if (high2 > num5)
{
num8 = 1;
num9 = high21 - high2;
while (num9 >= high2 && num8 < 32)
{
num9 = num9 - high2;
num8++;
}
if (num9 >= high2)
{
var num13 = high21 / high2;
if (num13 <= uint.MaxValue)
{
num8 = (uint)num13;
num9 = high21 - num8 * high2;
}
else
{
break;
}
}
num11 = num7 + num8 * (ulong)num5;
num12 = num6 + num8 * (ulong)num4;
if (num11 > 2147483647 || num12 > 2147483647)
{
break;
}
if (num9 < num12 || num9 + num11 > high2 - num5)
{
break;
}
num7 = (uint)num11;
num6 = (uint)num12;
high21 = num9;
if (high21 <= num6)
{
break;
}
}
else
{
break;
}
}
}
if (num5 != 0)
{
reg1.SetSizeKeep(num2, 0);
reg2.SetSizeKeep(num2, 0);
var num14 = 0;
var num15 = 0;
for (var i = 0; i < num2; i++)
{
var num16 = reg1._bits[i];
var num17 = reg2._bits[i];
var num18 = (long)num16 * num4 - (long)num17 * num5 + num14;
var num19 = (long)num17 * num7 - (long)num16 * num6 + num15;
num14 = (int)(num18 >> 32);
num15 = (int)(num19 >> 32);
reg1._bits[i] = (uint)num18;
reg2._bits[i] = (uint)num19;
}
reg1.Trim();
reg2.Trim();
}
else if (high2 / 2 < high21)
{
reg1.Sub(ref num, ref reg2);
}
else
{
reg1.Mod(ref reg2);
}
}
else
{
reg1.Mod(ref reg2);
}
}
else
{
reg1.Mod(ref reg2);
}
}
reg1.Set(NumericHelper.GCD(reg1.GetHigh2(2), reg2.GetHigh2(2)));
}
private static void LehmerGcd(ref BigIntegerBuilder reg1, ref BigIntegerBuilder reg2)
{
int num2;
uint num11;
int sign = 1;
Label_0002:
num2 = reg1._iuLast + 1;
int b = reg2._iuLast + 1;
if (num2 < b)
{
#if !(dotNET10 || dotNET11 || dotNETCF10 || dotNETMF)
NumericsHelpers.Swap <BigIntegerBuilder>(ref reg1, ref reg2);
NumericsHelpers.Swap <int>(ref num2, ref b);
#else
NumericsHelpers.Swap(ref reg1, ref reg2);
NumericsHelpers.Swap(ref num2, ref b);
#endif
}
if (b == 1)
{
if (num2 == 1)
{
reg1._uSmall = NumericsHelpers.GCD(reg1._uSmall, reg2._uSmall);
return;
}
if (reg2._uSmall != 0)
{
reg1.Set(NumericsHelpers.GCD(Mod(ref reg1, reg2._uSmall), reg2._uSmall));
}
return;
}
if (num2 == 2)
{
reg1.Set(NumericsHelpers.GCD(reg1.GetHigh2(2), reg2.GetHigh2(2)));
return;
}
if (b <= (num2 - 2))
{
reg1.Mod(ref reg2);
goto Label_0002;
}
ulong a = reg1.GetHigh2(num2);
ulong num5 = reg2.GetHigh2(num2);
int num6 = NumericsHelpers.CbitHighZero((ulong)(a | num5));
if (num6 > 0)
{
a = (a << num6) | (reg1._rgu[num2 - 3] >> (0x20 - num6));
num5 = (num5 << num6) | (reg2._rgu[num2 - 3] >> (0x20 - num6));
}
if (a < num5)
{
#if !(dotNET10 || dotNET11 || dotNETCF10 || dotNETMF)
NumericsHelpers.Swap <ulong>(ref a, ref num5);
NumericsHelpers.Swap <BigIntegerBuilder>(ref reg1, ref reg2);
#else
NumericsHelpers.Swap(ref a, ref num5);
NumericsHelpers.Swap(ref reg1, ref reg2);
#endif
}
if ((a == ulong.MaxValue) || (num5 == ulong.MaxValue))
{
a = a >> 1;
num5 = num5 >> 1;
}
if (a == num5)
{
reg1.Sub(ref sign, ref reg2);
goto Label_0002;
}
if (NumericsHelpers.GetHi(num5) == 0)
{
reg1.Mod(ref reg2);
goto Label_0002;
}
uint num7 = 1;
uint num8 = 0;
uint num9 = 0;
uint num10 = 1;
Label_0159:
num11 = 1;
ulong num12 = a - num5;
while ((num12 >= num5) && (num11 < 0x20))
{
num12 -= num5;
num11++;
}
if (num12 >= num5)
{
ulong num13 = a / num5;
if (num13 > 0xffffffffL)
{
goto Label_029E;
}
num11 = (uint)num13;
num12 = a - (num11 * num5);
}
ulong num14 = (ulong)num7 + (ulong)num11 * (ulong)num9;
ulong num15 = (ulong)num8 + (ulong)num11 * (ulong)num10;
if (((num14 <= 0x7fffffffL) && (num15 <= 0x7fffffffL)) && ((num12 >= num15) && ((num12 + num14) <= (num5 - num9))))
{
num7 = (uint)num14;
num8 = (uint)num15;
a = num12;
if (a > num8)
{
num11 = 1;
num12 = num5 - a;
while ((num12 >= a) && (num11 < 0x20))
{
num12 -= a;
num11++;
}
if (num12 >= a)
{
ulong num16 = num5 / a;
if (num16 > 0xffffffffL)
{
goto Label_029E;
}
num11 = (uint)num16;
num12 = num5 - (num11 * a);
}
num14 = (ulong)num10 + (ulong)num11 * (ulong)num8;
num15 = (ulong)num9 + (ulong)num11 * (ulong)num7;
if (((num14 <= 0x7fffffffL) && (num15 <= 0x7fffffffL)) && ((num12 >= num15) && ((num12 + num14) <= (a - num8))))
{
num10 = (uint)num14;
num9 = (uint)num15;
num5 = num12;
if (num5 > num9)
{
goto Label_0159;
}
}
}
}
Label_029E:
if (num8 == 0)
{
if ((a / ((ulong)2L)) >= num5)
{
reg1.Mod(ref reg2);
}
else
{
reg1.Sub(ref sign, ref reg2);
}
}
else
{
reg1.SetSizeKeep(b, 0);
reg2.SetSizeKeep(b, 0);
int num17 = 0;
int num18 = 0;
for (int i = 0; i < b; i++)
{
uint num20 = reg1._rgu[i];
uint num21 = reg2._rgu[i];
long num22 = (long)num20 * (long)num7 - (long)num21 * (long)num8 + (long)num17;
long num23 = (long)num21 * (long)num10 - (long)num20 * (long)num9 + (long)num18;
num17 = (int)(num22 >> 0x20);
num18 = (int)(num23 >> 0x20);
reg1._rgu[i] = (uint)num22;
reg2._rgu[i] = (uint)num23;
}
reg1.Trim();
reg2.Trim();
}
goto Label_0002;
}
