RE: EXTERNAL: Re: [vhdl-200x] Modular types

From: Martin.J Thompson <Martin.J.Thompson@trw.com>
Date: Tue Jul 01 2014 - 04:00:08 PDT
> 4 - (10**31)**31 has nearly a thousand digits in it - are you sure that it fitted on 3 lines? :)

That's a "thinko" - I actually did 2**31**31, sorry!

> Not quite sure what any of this has to do with Hardware Description, though. Anyone who's going to build a huge 
> block of silicon full of integer multipliers will be using a supercomputer to check their results, not a VHDL 
> operator.

Many VHDL users have wanted >32 bits for their ints, and the proposal is that instead of just saying 64-bits will be enough, to not limit things (much as Python doesn't limit you either).
 
Also crypto uses several-thousand-bit numbers, and simulating them with a bignum is very likely to be more efficient than thousands of individual bits.

Cheers,
Martin


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Received on Tue Jul 1 04:00:25 2014

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