[CR] Floating Point Almost Equal

[Porter]

View File

Floating Point Almost Equal

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This package contains VIs for testing equality of floating point numbers within a specified tolerance. Absolute Epsilon comparison, Relative Epsilon comparison and the ULP comparison have been implemented as described in this blog post by Bruce Dawson: http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/

Note that the ULP comparison has not been implemented for extended precision floating point type.

Installation and instructions:

• Install VIP package using VI Package Manager 2014.

Examples:

• "<LabVIEW>\examples\LAVA\AlmostEqual\AlmostEqual_Example 1.vi" Demonstrates the usage of all three AlmostEqual functions.
• "<LabVIEW>\examples\LAVA\AlmostEqual\AlmostEqual_Example 2.vi" Demonstrates a case where exactly equal fails to produce the expected result.

 

Development version available on GitHub: https://github.com/rfporter/FP-Equal

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• Submitter
  Porter
• Submitted
  12/19/2014
• Category
  General
• LabVIEW Version

 

[Mellroth]

I responded to the other thread regarding using pale-yellow for the background color, but for reference I add a comment here as well.

 

/J

[Porter]

Thanks for the suggestion. I've changed the color to orange.

[Fab]

Just posted about this package at the Unit Testing Group at NI: https://decibel.ni.com/content/thread/26693

 

I have done similar comparison math in the past, but your package is a lot more complete. Thanks for the post to Bruce Dawson's article.

 

Thanks,

Fab

[Mark Balla]

Certified 2-28-15 Placed in General Category