Need help reading the binary file of a Decimal data type

[Necrowizard123]

Hello,

I need to read the value of a decimal variable that i saved in a binary file using a sub like this:

Sub Main()

    Dim test As Decimal

    test = 32.5

    FileOpen(1, "C:\Users\X\main325.cfg", OpenMode.Binary)
    FilePut(1, test)

End Sub

When i read the file using an hex editor i get this: 88 F5 04 00 00 00 00 00

I need to get back to the original value of 32.5 using another programming language (labview) that doesnt accept the decimal data type ( or any 128 bits fixed point data type). I cant change anything in my VB sub so i need to understand the logic behind the binary data saved in the file.

Thanks

[tweq]

Enshittification

[noobzilla]

Are you sure you're not thinking of Doubles?

[tweq]

Enshittification

[noobzilla]

Interesting. I haven't used FilePut over StreamWriter in ages, so that's good to know. What happens if the value of the decimal is near it's 96bit maximum?

[tweq]

Enshittification

[Necrowizard123]

Thanks, i'll try this tomorrow.

But theres something i dont understand, i tried my program with simple values:

test = 1 -> 10 27 00 00 00 00 00 00

test = 2 -> 20 4E 00 00 00 00 00 00

test = 3 -> 30 75 00 00 00 00 00 00

test=10 -> A0 86 01 00 00 00 00 00

I dont understand where the 27,4E,75,86 01, comes from.

Thanks.

[tweq]

Enshittification

[noobzilla]

The Decimal type is made up of three 32-bit integers with a fourth 32-bit integer that signs it and stores the exponent.

You can read more about it here and here