Re: [boost] Portable signbit macro/function?

Johan Råde wrote:

Do you think that

inline bool signbit(float x) { // check that signbit_mask contains at most one 1 bit BOOST_ASSERT(!(signbit_mask & (signbit_mask - 1))); return binary_cast<boost::uint32_t>(x) & signbit_mask; }

is a good idea?

The unit tests of signbit should be enough to determine whether it works on a particular platform.