Bar Types - the use on Compare

[rt-trader]

Hello,

In looking through the NinjaScript.BarTypes I notice there are variants of Compare used;

In Range Bars;
if (close.ApproxCompare(barLow + rangeValue) > 0)

In LineBreakBars;
if (bars.Instrument.MasterInstrument.Compare(bars.Get Close(bars.Count - 1), anchorPrice) > 0)

and in NinjaScript intellisense there is also available;
if(close.CompareTo(barHigh - rangeVale) > 0)

Each of these variants would appear to do the same - are there situations where one would be favored over another?

And separately - in what way are they better than say;
if(close < barHigh - rangeValue)

Thank you

[NinjaTrader_Matthew]

.ApproxCompare() is an extension method we use for double values which helps account for floating point issues

There are some classes such as the MasterInstrument which have methods called Compare(), but internally those methods will be using the ApproxCompare() method which also account for double floating points.

.CompareTo() is a .NET method which sometimes fails with floating point issues per the remarks in this MSDN page: https://msdn.microsoft.com/en-us/lib...v=vs.110).aspx

As a result, we implemented the ApproxCompare() to help in these situations

Separately, if you just tested:

if(close < barHigh - rangeValue)

You could run into issues with floating point decimals and the test might fail, whereas "ApproxCompare" would not

[rt-trader]

Thank you for your reply Matthew.

I think I understand now, however I will also check the MSDN page as you suggest.

Thanks again,