Trying to remember floating-point rules. Isn't repeated multiplication less precise than pow()? I thought that was why even integer exponents were only unrollable if things like -ffast-math were set. I might be remembering wrong though.
Sending from a mobile, pardon the brevity. ~ C. On Oct 4, 2010 1:30 AM, "Stéfan van der Walt" <[email protected]> wrote: > Hi Stefan > > On Mon, Oct 4, 2010 at 8:24 AM, Stefan Behnel <[email protected]> wrote: >> Stéfan van der Walt, 03.10.2010 20:29: >>> >>> x**4 >>> >> the correct way to do it (although a similar optimisation for constant >> exponents may be worth it). If it's an integer type, please double check > > Yes, it's a floating point number; such an optimisation would be very useful! > > Regards > Stéfan > _______________________________________________ > Cython-dev mailing list > [email protected] > http://codespeak.net/mailman/listinfo/cython-dev
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