4 Aug
2006
4 Aug
'06
12:40 p.m.
Gennaro Prota wrote:
On Fri, 4 Aug 2006 09:53:35 +0100, "John Maddock"
There are also platforms that add parity, so you can get two 1 bits in the object representation.
As I said, the code is widely portable (probably on all implementations supported by boost) not fully portable.
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? It seems a bit wasteful to make this check each time you call the function signbit. --Johan Råde