kevin diggs <diggskevin38@xxxxxxxxx> writes: > Does the -ffast-math option speed up operations enough to make > fighting with mozilla/firefox source worth the trouble? I think the > main problem is identifying NaNs. As with all such questions, the real answer is: it depends. If your code uses a lot of floating point operations, then -ffast-math can speed things up quite a bit on some processors, notably 32-bit x86 processors. E.g., if your code is dominated by calls to sin, then -ffast-math could give you as much as a 50% speed improvement on that platform. But of course not much code is dominated by calls to sin, and the actual speedup is going to depend on the actual code. Ian
