[libre-riscv-dev] IEEE754 FPU

[Luke Kenneth Casson Leighton]

On Monday, February 18, 2019, Aleksandar Kostovic <
alexandar.kostovic at gmail.com> wrote:

> I have finished the module. Now Luke please go over it and find any
> mistakes. I left the commented Verilog code for you to see if there is
> anything that needs to be changed.


Cool.
Ok line 23 to 25, FPNum all need 2nd arg False, just like in div.py, this
makes the mantissa 24 bit as opposed to 27 bit.

28, it is product not tot and it needs to be i think 51 bit.

Indentation, 33 to 90 back 8 spaces, 91 back 4, 93 to 98 back 12.

As hendrik says, indents are part of the syntax , you MUST get this right,
as it is literally a block of code. Put in even one extra space and it is a
declaration of a DIFFERENT block.

 Will try some tomorrow, 4am at the moment.

Do take a copy of test-add.py call it test_mul.py

Then you can start running things and see whats going on. Remember to
change the vcd file name output.

L.

Also, what's up with the indentation in python? Getting error messages just
> because something is not indented properly. For real? Definitely not a
> language i would like to use outside of migen/nmigen. Also autocompletion
> FTW! Without it, I would do this for 20% more time at least.


Java and javascript as well as c and c++ to a lesser extent all get written
extremely badly.

It is thus near impossible for a developer to be useful immediately as the
code is not readable. Even coding standards do not help because they are
different from project to project.

Python is clear as day precisely because you absolutely must use the
correct same indentation amount in any given block.

There do exist python aware IDEs, I refuse to use them, they slow me down,
significantly.

vim is the simplest fastest editor i encountered, due to the separation of
command and edit mode. The keys are actually blindingly obvious, d means
delete, a for append, i for insert. dd means delete line, w means move
forward one word, dw means delete one word, etc etc. 9dw means delete 9
words.  Once memorised it's extremely fast as there is absolutely no need
whatsoever to coordinate mouse movement or even bother eye tracking the
cursor.




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