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View File Floating Point Almost Equal 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 Submitter Porter Submitted 12/19/2014 Category General LabVIEW Version

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Yes. I think you will be a little surprised when you come to do this as it probably isn't doing what you think it is (as Ned is trying to explain). Yes. It creates and then writes because you need something to read otherwise it would be an empty string or error (there is no CreateOrOpen equivalent). ...And Yes. "Open" is equivalent to OpenExisting(string mapName) in C#. Similarly, "Create File Map" is equivalent to CreateFromFile(String, FileMode, String, Int64) - I think they term it "persistent" mapping. Likewise, Create Memory Map equates to CreateNew(String, Int64, MemoryMappedFileAccess) which I think they term Non-Persistent mapping . I think that's right at least. The VIs use the windows API rather than .NET so the call names are bit different. So you'll create your file map in your C# probably using "CreateNew" with READ/WRITE permissions and a certain mapName (it doesn't have to be persistent and on disk) and then you'll "Open" it in LabVIEW (with READ permission) with whatever "mapName" string you gave it in the C# CreateNew method. Error -80002 just means it couldn't open a mapping either because a map with that name doesn't exist or because it doesn't have the permission to open it.

I just upgraded the LAVA server, so the response should be even better than the already pretty fast previous server. Enjoy.