byte conversion

[Strokes]

I'm trying to send the number -8 in decimal (i8 representation)  to an external device using visa write. However, when I use the typecast function to convert -8 to a hex string, it converts it to the unsigned equivalent which is F8 in hex and 248 in decimal.

Any way around this happening?

p.s. I posted this question a few days ago in the biobench section by mistake so sorry mods if this isn't allowed but I thought it would be moved to the LabVIEW section.

[Coq_Rouge]

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@Strokes wrote:

I'm trying to send the number -8 in decimal (i8 representation)  to an external device using visa write. However, when I use the typecast function to convert -8 to a hex string, it converts it to the unsigned equivalent which is F8 in hex and 248 in decimal.

Any way around this happening?

p.s. I posted this question a few days ago in the biobench section by mistake so sorry mods if this isn't allowed but I thought it would be moved to the LabVIEW section.

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And what number (in hex) did you expect to see ;).

Take a look here http://en.wikipedia.org/wiki/Two's_complement

[Strokes]

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Coq Rouge wrote:

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And what number (in hex) did you expect to see ;).

Take a look here http://en.wikipedia.org/wiki/Two's_complement

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Good question, here was me thinking I'd never need to understand two's complement when I was studying it... Thanks for the input, I'll have a look at the wiki page and hopefully the solution should be straight forward enough from there.