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


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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?

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

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General development and scripting discussions.


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

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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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1 hour ago, 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

 

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

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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.

Roses are FF0000, violets are 0000FF... All my base are belong to you.

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