Syntax
public static bool AlmostEquals(this double double1, double double2, double precision)
public static bool AlmostEquals(double double1, double double2, double precision)
Parameter Description
| double1 | First double value |
| double2 | Second double value |
| precision | Desirable precision when comparing |
Description
Sometimes there's a need to compare two values of type double to determine whether they are within a close approximation to each other. The following function taken from
Stackoverflow will handle it.
Example
Example below compares two double values for approximate equality within one tick value of an instrument.
Example using C# extension methods:
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;
namespace WealthLab.Strategies
{
public class AlmostEqualsDemo : WealthScript
{
protected override void Execute()
{
double tick = Bars.SymbolInfo.Tick;
SetBarColors( Color.Silver, Color.Silver );
for(int bar = 1; bar < Bars.Count; bar++)
{
bool result =
( Close[bar].AlmostEquals(Low[bar],tick) || Close[bar].AlmostEquals(Low[bar]+tick,tick) ||
Open[bar].AlmostEquals(Low[bar],tick) || Open[bar].AlmostEquals(Low[bar]+tick,tick) );
if( result )
SetBarColor( bar, Color.Magenta );
}
}
}
}
Legacy syntax example:
using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;
using Community.Components;
namespace WealthLab.Strategies
{
using c = Community.Components.Calculate;
public class AlmostEqualsDemo : WealthScript
{
protected override void Execute()
{
double tick = Bars.SymbolInfo.Tick;
SetBarColors( Color.Silver, Color.Silver );
for(int bar = 1; bar < Bars.Count; bar++)
{
bool result =
( c.AlmostEquals(Close[bar],Low[bar],tick) || c.AlmostEquals(Close[bar],Low[bar]+tick,tick) ||
c.AlmostEquals(Open[bar],Low[bar],tick) || c.AlmostEquals(Open[bar],Low[bar]+tick,tick) );
if( result )
SetBarColor( bar, Color.Magenta );
}
}
}
}