Subject: Re: [boost] [config/multiprecision/units/general] Do we have a policy for user-defined-literals?
From: John Maddock (john_at_[hidden])
Date: 2013-04-28 08:55:17
>If I ever get my behind in gear on the radix-2
>floating-point backend, do you think it potentially
>be used there in combination with constexpr as well?
Floating point is tough because you have the exponent to deal with.
For integers it's simply:
* Accept a sequence of 4-bit values (the hex bytes).
* Shuffle the 4-bit value sequence into a limb-bit value sequence.
* Initialise your array of limbs with the sequence.
Once you get your head around what you're trying to do, there's actually
very little code involved at all :-)
That said, I don't see why it couldn't be done for hexadecimal floating
point constants - at least in princpal!
Decimal conversion would be next to impossible because you'd need a complete
compile-time-arbitary-precision-arithmetic library :-(
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk