internal bool goal_seek_bisection(ref GoalSeekData data, double[] vals)
{
int num3 = 0;
if (data.havexpos && data.havexneg)
{
double num2 = Math.Abs((double)(data.xpos - data.xneg)) / (Math.Abs(data.xpos) + Math.Abs(data.xneg));
for (int i = 0; i < 160; i++)
{
double xneg;
double xpos;
double yneg;
double num11;
double y = 0.0;
int num6 = 0;
num6 = ((i % 4) == 0) ? 1 : (((i % 4) == 2) ? 2 : 3);
Label_0068:
switch (num6)
{
case 0:
xneg = data.xpos - (data.ypos * ((data.xneg - data.xpos) / (data.yneg - data.ypos)));
goto Label_0274;
case 1:
xneg = (data.xpos + data.xneg) / 2.0;
if (!this.irr_npv(xneg, ref y, vals))
{
continue;
}
if (y != 0.0)
{
break;
}
FinancialHelper.update_data(xneg, y, ref data);
return(true);
case 2:
yneg = 0.0;
num11 = 0.0;
if (num2 <= 0.1)
{
goto Label_017F;
}
num6 = 3;
goto Label_0068;
case 3:
xneg = (data.xpos + data.xneg) / 2.0;
goto Label_0274;
default:
return(false);
}
double num7 = Math.Sqrt((y * y) - (data.ypos * data.yneg));
if (num7 == 0.0)
{
continue;
}
xneg += ((xneg - data.xpos) * y) / num7;
goto Label_0274;
Label_017F:
switch ((num3++ % 4))
{
case 0:
xpos = data.xpos;
xpos = data.ypos;
break;
case 2:
xpos = data.xneg;
yneg = data.yneg;
break;
default:
xpos = (data.xpos + data.xneg) / 2.0;
if (!this.irr_npv(xpos, ref yneg, vals))
{
continue;
}
break;
}
double xstep = Math.Abs((double)(data.xpos - data.xneg)) / 1000000.0;
if (!this.fake_df(xpos, ref num11, xstep, ref data, vals) || (num11 == 0.0))
{
continue;
}
xneg = xpos - ((1.01 * yneg) / num11);
if (((xneg < data.xpos) && (xneg < data.xneg)) || ((xneg > data.xpos) && (xneg > data.xneg)))
{
continue;
}
Label_0274:
if (this.irr_npv(xneg, ref y, vals))
{
if (FinancialHelper.update_data(xneg, y, ref data))
{
return(true);
}
num2 = Math.Abs((double)(data.xpos - data.xneg)) / (Math.Abs(data.xpos) + Math.Abs(data.xneg));
if (num2 < data.precision)
{
if (data.yneg < y)
{
y = data.yneg;
}
xneg = data.xneg;
if (data.ypos < y)
{
y = data.ypos;
}
xneg = data.xpos;
data.root = xneg;
return(true);
}
}
}
}
return(false);
}
private bool goal_seek_bisection(ref GoalSeekData data, DateTime settle, DateTime maturity, double rate, double price, double redem, int freq, int basis)
{
int num3 = 0;
if (data.havexpos && data.havexneg)
{
double num2 = Math.Abs((double)(data.xpos - data.xneg)) / (Math.Abs(data.xpos) + Math.Abs(data.xneg));
for (int i = 0; i < 0x6c; i++)
{
double xpos;
double yneg;
double num10;
double num11;
double yield = 0.0;
double y = 0.0;
int num6 = ((i % 4) == 0) ? 1 : (((i % 4) == 2) ? 2 : 3);
Label_006F:
switch (num6)
{
case 0:
yield = data.xpos - (data.ypos * ((data.xneg - data.xpos) / (data.yneg - data.ypos)));
goto Label_02B3;
case 1:
yield = (data.xpos + data.xneg) / 2.0;
if (!yield_f(yield, ref y, settle, maturity, rate, price, redem, freq, basis))
{
continue;
}
if (y != 0.0)
{
break;
}
FinancialHelper.update_data(yield, y, ref data);
return(true);
case 2:
xpos = 0.0;
yneg = 0.0;
num10 = 0.0;
num11 = 0.0;
if (num2 <= 0.1)
{
goto Label_01A9;
}
num6 = 3;
goto Label_006F;
case 3:
yield = (data.xpos + data.xneg) / 2.0;
goto Label_02B3;
default:
goto Label_02B3;
}
double num7 = Math.Sqrt((y * y) - (data.ypos * data.yneg));
if (num7 == 0.0)
{
continue;
}
yield += ((yield - data.xpos) * y) / num7;
goto Label_02B3;
Label_01A9:
switch ((num3++ % 4))
{
case 0:
xpos = data.xpos;
xpos = data.ypos;
break;
case 2:
xpos = data.xneg;
yneg = data.yneg;
break;
default:
xpos = (data.xpos + data.xneg) / 2.0;
if (!yield_f(xpos, ref yneg, settle, maturity, rate, price, redem, freq, basis))
{
continue;
}
break;
}
num10 = Math.Abs((double)(data.xpos - data.xneg)) / 1000000.0;
if (!this.fake_df(xpos, ref num11, num10, ref data, settle, maturity, rate, price, redem, freq, basis) || (num11 == 0.0))
{
continue;
}
yield = xpos - ((1.01 * yneg) / num11);
if (((yield < data.xpos) && (yield < data.xneg)) || ((yield > data.xpos) && (yield > data.xneg)))
{
continue;
}
Label_02B3:
if (yield_f(yield, ref y, settle, maturity, rate, price, redem, freq, basis))
{
if (FinancialHelper.update_data(yield, y, ref data))
{
return(true);
}
num2 = Math.Abs((double)(data.xpos - data.xneg)) / (Math.Abs(data.xpos) + Math.Abs(data.xneg));
if (num2 < data.precision)
{
if (data.yneg < y)
{
y = data.yneg;
yield = data.xneg;
}
if (data.ypos < y)
{
y = data.ypos;
yield = data.xpos;
}
data.root = yield;
return(true);
}
}
}
}
return(false);
}
internal bool goal_seek_newton(ref GoalSeekData data, DateTime settle, DateTime maturity, double rate, double price, double redem, int freq, int basis, double x0)
{
double num2 = data.precision / 2.0;
for (int i = 0; i < 20; i++)
{
double num7;
double y = 0.0;
double dfx = 0.0;
if ((x0 < data.xmin) || (x0 > data.xmax))
{
return(false);
}
bool flag = yield_f(x0, ref y, settle, maturity, rate, price, redem, freq, basis);
if (!flag)
{
return(flag);
}
if (FinancialHelper.update_data(x0, y, ref data))
{
return(true);
}
if (Math.Abs(x0) < 1E-10)
{
if (data.havexneg && data.havexpos)
{
num7 = Math.Abs((double)(data.xpos - data.xneg)) / 1000000.0;
}
else
{
num7 = (data.xmax - data.xmin) / 1000000.0;
}
}
else
{
num7 = Math.Abs(x0) / 1000000.0;
}
flag = this.fake_df(x0, ref dfx, num7, ref data, settle, maturity, rate, price, redem, freq, basis);
if (!flag)
{
return(flag);
}
if (dfx == 0.0)
{
return(false);
}
double num3 = x0 - ((1.000001 * y) / dfx);
if (num3 == x0)
{
data.root = x0;
return(true);
}
double num4 = Math.Abs((double)(num3 - x0)) / (Math.Abs(x0) + Math.Abs(num3));
x0 = num3;
if (num4 < num2)
{
data.root = x0;
return(true);
}
}
return(false);
}
private bool goal_seek_bisection(ref GoalSeekData data, DateTime[] dates, double[] values)
{
int num3 = 0;
if (data.havexpos && data.havexneg)
{
double num2 = Math.Abs((double)(data.xpos - data.xneg)) / (Math.Abs(data.xpos) + Math.Abs(data.xneg));
for (int i = 0; i < 0x6c; i++)
{
double xpos;
double yneg;
double num10;
double num11;
double rate = 0.0;
double y = 0.0;
int num6 = ((i % 4) == 0) ? 1 : (((i % 4) == 2) ? 2 : 3);
Label_006F:
switch (num6)
{
case 0:
rate = data.xpos - (data.ypos * ((data.xneg - data.xpos) / (data.yneg - data.ypos)));
goto Label_0295;
case 1:
rate = (data.xpos + data.xneg) / 2.0;
if (!xirr_f(rate, ref y, dates, values))
{
continue;
}
if (y != 0.0)
{
break;
}
FinancialHelper.update_data(rate, y, ref data);
return(true);
case 2:
xpos = 0.0;
yneg = 0.0;
num10 = 0.0;
num11 = 0.0;
if (num2 <= 0.1)
{
goto Label_019F;
}
num6 = 3;
goto Label_006F;
case 3:
rate = (data.xpos + data.xneg) / 2.0;
goto Label_0295;
default:
goto Label_0295;
}
double num7 = Math.Sqrt((y * y) - (data.ypos * data.yneg));
if (num7 == 0.0)
{
continue;
}
rate += ((rate - data.xpos) * y) / num7;
goto Label_0295;
Label_019F:
switch ((num3++ % 4))
{
case 0:
xpos = data.xpos;
xpos = data.ypos;
break;
case 2:
xpos = data.xneg;
yneg = data.yneg;
break;
default:
xpos = (data.xpos + data.xneg) / 2.0;
if (!xirr_f(xpos, ref yneg, dates, values))
{
continue;
}
break;
}
num10 = Math.Abs((double)(data.xpos - data.xneg)) / 1000000.0;
if (!this.fake_df(xpos, ref num11, num10, ref data, dates, values) || (num11 == 0.0))
{
continue;
}
rate = xpos - ((1.01 * yneg) / num11);
if (((rate < data.xpos) && (rate < data.xneg)) || ((rate > data.xpos) && (rate > data.xneg)))
{
continue;
}
Label_0295:
if (xirr_f(rate, ref y, dates, values))
{
if (FinancialHelper.update_data(rate, y, ref data))
{
return(true);
}
num2 = Math.Abs((double)(data.xpos - data.xneg)) / (Math.Abs(data.xpos) + Math.Abs(data.xneg));
if (num2 < data.precision)
{
if (data.yneg < y)
{
y = data.yneg;
rate = data.xneg;
}
if (data.ypos < y)
{
y = data.ypos;
rate = data.xpos;
}
data.root = rate;
return(true);
}
}
}
}
return(false);
}
