2's complement

[NFarrell]

Hi GerdW,

     This is a useful bit of code.  May I please have your permission to use it?  Thank you!

Best Regards,

NFarrell

[GerdW]

Hi NFarrell,

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@NFarrell wrote:

This is a useful bit of code.  May I please have your permission to use it?

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Well, after having posted that piece of code 15 years ago for public use I still can grant you permission to use it! 😄

(15 years later I would not use such code anymore, but would use the integer approach as shown by Christian Altenbach. You should do so too.)

[GerdW]

Hi,

after getting a Kudo for a ~20 year old message I would like to add this: Don't use that old VI anymore!

You can do the same with a single BooleanArrayToNumber node when configuring its output to I16 (or I32) and setting the SignExtensionMode (in the node context menu) to "If output is signed"…

[Darren]

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@GerdW wrote:

after getting a Kudo for a ~20 year old message I would like to add this: Don't use that old VI anymore!

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Hey, it's not my fault that a google search for 'LabVIEW 2s complement' gave me your forum post as the first hit. I was in a hurry! 😛

[altenbach]

Some more background on sign extension with links to discussions.