Boost logo

Boost :

Subject: Re: [boost] [Boost.FixedPoint] Choose notation
From: John Maddock (john_at_[hidden])
Date: 2013-04-29 04:03:51

> If you absolutely needed an 8.4 type then you need fixed-width integer
> support beyond that provided by <cstdint>. You could provide an
> implementation of integer<12> that is a 12 bit integer and then make
> fixed<integer<12>,4>. In my opinion this is another library outside the
> scope of a fixed-point library.

Can I just point out that the multiprecision lib will do a 12-bit int type
if that's what you want:

typedef number<cpp_int<12, 12, unsigned_magnitude, unchecked, void> >

Of course the signed version is signed-magnitude not 2's complement....

BTW, it may well also be worth investigating using multiprecision::number as
the front end for these types?

Now I'll go back to lurking ;-) John.

Boost list run by bdawes at, gregod at, cpdaniel at, john at