Re: [boost] Portable signbit macro/function?

From: Johan Råde (rade_at_[hidden])
Date: 2006-08-04 09:03:49

Peter Dimov wrote:
> Johan Råde wrote:
> 
>> Does IEEE 754 allow a parity bit?
> 
> In principle, IEEE 754 specifies value bits, not storage bits. There is no 
> guarantee that storage bits represent value bits, they can (in theory) be 
> encrypted or xor'ed with AA55. In practice, though, the 32 value bits of an 
> IEEE 754 float do correspond to the 32 storage bits of a 32 bit unsigned 
> integer. 
> 

Right now parity bits is a hypothetical probem.
Let's fix it if it becomes a real problem.