Wire representation of floating point numbers

I have a wire representation for integers (just big endian) and it's easy to work out tests for that. The easiest way to encode floats is then to split into mantissa and exponent. I'd figured that out and was looking for a code example.

I'd given up, and was searching for 'convert float to ieee 754 c code', when I finally found this answer, based on my original approach:

http://stackoverflow.com/a/14955046

Popular posts from this blog

3D Printer ramblings

 I have a Prusa i3 mk2.5 in storage. I used to use it in my shed I used not to worry about it's harmful emissions: I just didn't share the space with it. I had, however, added an enclosure, and was planning to add a HEPA filter too it. Once it's in an enclosure, it's massive. Even if I had added the filter, there's no where to put it. I'd like a small printer that has an enclosure or is easy to enclose. I figure I could get by with 150x150x150 build area: I was rarely patient enough to wait for my i3 to print bigger models. 200x200x200 would probably actually replace my current printer, so that would be a bonus. Not many printers have HEPA filters, which is really a shame. It seems just to be the result of a misconception about HEPA filters, and about filtration in general. Read this . E.g. I was looking at a used Lulzbot mini, and there are ready made enclosure s for it, however . In this particular case, it's no big deal: opportunities to buy a Lulzbot min
Read more

Balance Bot V2

Image
My current balance bot sort of works, but it's surprising it does: it's centre of gravity is actually only about 60mm above the motor axis. The whole thing ways 320g. The 6 AAA batteries only weigh 70g, so despite being right at the top, the don't affect the centre of gravity much. 6 AA batteries would weigh about 180g. That would add a 34% to the overall weight, and move the centre of gravity much higher. Seems like a dramatic increase in weight: it would be nice to be a bit more incremental. More AAA batteries isn't really worth considering: they only weight 12g, vs 30g for an AA. 4 AA would deliver much less power/torque, so that's no good. There's no middle ground, in other words. I'm also going to make the whole thing a bit taller: I need more space to add more sensors in any case. Last time I made the frame, I needed an elaborate jig to get it square and it actually didn't work that well. This time, I decided to use some short bits of a
Read more

FLSUN Q5

So I ended up buying an FLSUN Q5. I've assembled it, and done a test print. I spent perhaps an hour assembling it and setting it up, but my daughter helped for the second half. It was really very easy, but it helped hugely to have watched someone else do it first in a Youtube video. The instructions aren't much help with the actual assembly, but they are clear on the bed levelling and zeroing process. Careful to tighten the screws on the arms though, or they'll come undone part way through your first print! It's a little under the dimensions I guessed: approximately WxDxH: 340x300x560, excluding the spindle holder (which is easily removable). I'm planning to put it in a cabinet on the balcony. I think this IKEA Josef will be perfect. I'll have to cut some holes in it for ventilation, which I think I'll do using a drill powered nibbler. I assume the cabinet will arrive flat packed which should make it fairly easy to work on the panels. Rather than cut holes
Read more