How to convert a large number to hex without truncating to 32-bit.

[habsfan]

 I am trying to convert a very large number to hexadecimal (string). The number gets truncated to 32-bit, which is not what I want. For example, the number 28037546508295 (double) should be 0x198000000007. Labview truncates it and the resulting string is 0x7FFFFFFF, using Number To Hex String.vi. I am stuck. Thanks.

[Norbert_B · Accepted solution]

"Number to Hexadecimal String" accepts only I32 data. So you should see a red coercion dot when connecting your floating point number.

You have to use "Format Value" (also in the String >> String/Number Coercion-palette) and use "%x" as format string.

hope this helps,

Norbert

[Omar_II]

Did you try

"To Unsigned Quad Integer"

[habsfan]

 I should clarify a bit. The Format Into String.vi works in Labview 10. I have a need to use Labview 7. I cannot get it to work using Format Into String.vi. Thanks for the help.

[Darin.K]

Here is a LV9 Snippet of a method that should be LV7 friendly.

[altenbach]

You can split your dbl into two 32bit integers using quotient&remainder (divide by 2^32 followed by "toU32"). Now format each with %032x and concatenate the strings. Remove leading zeroes if needed. (Sorry, posting via phone. I can show an example later)

[habsfan]

  An example would be great. Thanks.

[habsfan]

  I don't believe Labview 7 uses the $ format character. Thanks.

[Darin.K]

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@habsfan wrote:

  I don't believe Labview 7 uses the $ format character. Thanks.

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Mostly a way to pull off a few tricks and avoid crossing wires.  Here is a $-free version, I changed the constant to 2^32, I had the original code for working with 48-bit numbers should have looked more closely.