>Could you provide some error analysis to show when your patch is applicable and
>the accuracy sufficient?
No formal analysis has been made, but I ran canvas performance test
(http://dl.dropbox.com/u/1865210/mindcat/canvas_perf.html - on ARM and
rendered using Cairo) 15 times. During those tests _cairo_spline_error_squared
was called about 100 million times with randomized data and just once
there was one pixel difference between double and float versions.
Unfortunately I didn't record the used spline in that case and haven't been
able to reproduce that since.
--MarkoK--
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