Re: [boost] Portable signbit macro/function?

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.