Implement `fpu` module

[piranna]

Create a simple fpu module that host all the other components and can be used as a black-box. It can be just a wrapper over all the other components, just routing the a, b and z data wires and their signal ones according to an op selector, almost like a "kitchen sink" example of how to use the components.

In a future iteration, maybe it would be nice to create another more advanced one that allow execution of different operations at the same time to increase performance, with some control using a FIFO or similar to warranty order of execution, but maybe it would be done in an independent project too.

[dawsonjon]

Hi,

Please could you tell me a little bit more about what you are trying to achieve, as I have been working on another project that might prove to be a better starting point for you. In my other project, I have developed pipelined floating point units that achieve several orders of magnitude greater performance but consume more resources. I have already implemented add, multiply, divide, comparisons and square root operations, and could easily add the extra operations you have requested. What do you think?

[piranna]

That would be great! :-D My needs are of 32 and 64 bits floating point operations for my implementation of WebAssembly, and so far this repo is the only one that I've find that support 64 bits, but the other project you talk about seems promising as a better candidate. Could you be able to point it to me? Being pipelined would also help me to improve my actual sequential implementation... :-)

By the way, if you are interested, you are more than welcome to help on wasmachine :-D

[piranna]

If you are interested, the spec has a description of all the required floating point operations and their exact behaviour.

[piranna]

Do you have your fpu published somewhere? I have been looking on your github account but didn't found anything... :-/

[dawsonjon]

It's not on github yet. I will upload it tonight.

[piranna]

Thank you so much! :-)

[dawsonjon]

I have uploaded the project here: https://github.com/dawsonjon/verilog-math.git It is still a bit of a work in progress, at the moment, but should be able to tidy it up a bit over the next few days.

[piranna]

I have uploaded the project here: https://github.com/dawsonjon/verilog-math.git It is still a bit of a work in progress, at the moment, but should be able to tidy it up a bit over the next few days.

Great, thank you! I'll take it a look and give you comments, maybe I can be able to help you with it :-)