On Tue, Nov 24, 2015 at 2:28 PM, Michael Niedermayer wrote:
> On Tue, Nov 24, 2015 at 12:02:24PM -0500, Ganesh Ajjanagadde wrote:
>> This rewrites into a similar expression avoiding sqrt. Similarity is
>> assured since sqrt(x^2 + y^2)/(x+y) lies in [1/sqrt(2), 1] for x, y > 0.
>>
>> Tested on x86-
On Tue, Nov 24, 2015 at 12:02:24PM -0500, Ganesh Ajjanagadde wrote:
> This rewrites into a similar expression avoiding sqrt. Similarity is
> assured since sqrt(x^2 + y^2)/(x+y) lies in [1/sqrt(2), 1] for x, y > 0.
>
> Tested on x86-64, Haswell, GNU/Linux.
> Command:
> ffmpeg -f lavfi -i mandelbrot
This rewrites into a similar expression avoiding sqrt. Similarity is
assured since sqrt(x^2 + y^2)/(x+y) lies in [1/sqrt(2), 1] for x, y > 0.
Tested on x86-64, Haswell, GNU/Linux.
Command:
ffmpeg -f lavfi -i mandelbrot -f null -
old (draw_mandelbrot):
277625266 decicycles in draw_mandelbrot,
