Comparing two values, equals or near (how to determine if near?) - (Moved)

[vulcan4d]

I'm working on an AutoIt script that pulls in values and compares them in pairs.  I need to know whether two values are either equal or very close to each other.  The latter is what I can't figure out because it's not as simple as a ><= statement and the values are dynamic meaning I need to determine something is near by percentage and not an actual amount.    Is there a function that does this, determines if two values are almost equal based on a global percentage of 2% for example?

[Melba23]

Moved to the appropriate AutoIt General Help and Support forum, as the Developer General Discussion forum very clearly states:

  Quote

General development and scripting discussions.

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Do not create AutoIt-related topics here, use the AutoIt General Help and Support or AutoIt Technical Discussion forums.

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Moderation Team

[water]

Not that I know of.

But you can easily create such a function yourself. 
Quick and dirty: 

$iPercent = 2
Global $iValue1 = 100
Global $iValue2 = 102
Global $iLowerBoundary = $iValue1 - ($iValue1/100*$iPercent)
Global $iUperBoundary = $iValue1 + ($iValue1/100*$iPercent)
if $iValue2 >= $iLowerBoundary And $iValue2 <= $iUperBoundary Then
    ConsoleWrite($iValue2 & " is 'equal' to " & $iValue1 & @CRLF)
Else
    ConsoleWrite($iValue2 & " is NOT 'equal' to " & $iValue1 & @CRLF)
EndIf

 

[Deye]

Or even maybe this :

$iValue1 = 12445
$iValue2 = 12694

$PercentageOfChange = Abs(Round(($iValue2 - $iValue1) / $iValue1 * 10 ^ 2, 2))
ConsoleWrite("%" & $PercentageOfChange & @LF)

 

Edited April 3, 2022 by Deye

[vulcan4d]

  On 4/3/2022 at 7:55 PM, water said:

Not that I know of.

But you can easily create such a function yourself. 
Quick and dirty: 

$iPercent = 2
Global $iValue1 = 100
Global $iValue2 = 102
Global $iLowerBoundary = $iValue1 - ($iValue1/100*$iPercent)
Global $iUperBoundary = $iValue1 + ($iValue1/100*$iPercent)
if $iValue2 >= $iLowerBoundary And $iValue2 <= $iUperBoundary Then
    ConsoleWrite($iValue2 & " is 'equal' to " & $iValue1 & @CRLF)
Else
    ConsoleWrite($iValue2 & " is NOT 'equal' to " & $iValue1 & @CRLF)
EndIf

 

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Too bad there is no built in function but this is brilliant!  Thanks so much!

[SadBunny]

Note that the math here could get ambiguous.

Say you want to know whether 98.01 and 100 are "equal" within a 2% range.

Well, 98.01 is 98.01% of 100, so yes, But 100 is 1,0203% of 98, so more than 2% away, so no.

In other words, keep the order of the numbers in mind using this logic.