On 05.01.2011, at 18:14, Peter Maydell wrote: > On 5 January 2011 16:59, Alexander Graf <ag...@suse.de> wrote: >> >> On 02.01.2011, at 13:06, Aurelien Jarno wrote: >> >>> Use the new function float32_is_any_nan() instead of >>> float32_is_quiet_nan() || float32_is_signaling_nan(). >>> >>> Cc: Alexander Graf <ag...@suse.de> >>> Signed-off-by: Aurelien Jarno <aurel...@aurel32.net> >> >> I frankly have very little knowledge of FP stuff. Is any_nan really equal to >> quiet_nan || signaling_nan or would it cover more cases? > > It is exactly equivalent -- all NaNs are either signalling or quiet. > > (If you want to check this you don't need to know anything about floating > point, all three functions are just acting on 32 bit values so you could > in theory identify all the bit patterns they return true or false on...)
Yeah, reading on through the FP parts of the spec I realized that too :). Thanks for the clarification. Acked-by: Alexander Graf <ag...@suse.de> Alex
