On Wed, Jan 11, 2006 at 12:12:30PM +0100, Jay Vaughan wrote: > >How's its float performance? Older ARMs have very bad/non-existant floating > >point support. > > > > i would wager that floating-point is not its forté, but rather than > give you an opinion, what would be got a good float-performance > benchmark that i can run on it to give you some real figures? is > there a preferred stdout-style C app i can run that'll give us some > real figures?
Just write some code that does a bunch of float mutiplies on an array and time them. The maximum peak performance of a modern CPU is 1 or 2 cycles per multiply, but in practice memory bandwidth throttles that. 10 might be more typical at a rough guess. Writing DSP code for integer platforms is extremly tedious, and I dont think you will want to port any float code to an integer only platform. Best to look for code that allready works in ints. - Steve
